about the 12 agents involved. six have resigned, two are being fired, three have been cleared of serious wrongdoing, one has retired. all of the men had been questioned and offered lie detector tests following reports that at least one agent had brought a prostitute back had his poe tell room in colombia. the news of misconduct broke just after the president arrived for a summit there. at the time he was asked if he would be angry if the allegations proved correct. >> i expect that investigation to be thorough, and i expect it to be rigorous. if it turns out that some of the allegations that have been made in the press are confirmed, then of course, i'll be angry. >> today in an interview, the president defended the agency, but he called those agents involved knuckleheads. >> norah, so what happens next in the investigation?

>> well, scott, the investigation continues especially for those 12 military personnel who still have not yet been dealt with and also there are now lawmakers on capitol hill demanding answers and that's why the homeland security chief, janet napolitano will be up on the hill to answer questions to make sure this doesn't happen again. >> and we're being told that even the people who have been cleared are going to be reassigned at agency. n norah, thank you very much. it caught the attention of everyone in the newsroom when the government reported a new case of mad cow disease, the first in this country in six years and the immediate question was, of course, is the public in any danger? we asked wyatt andrews to look into it. >> reporter: this time, the disease was found in a dead five-year-old cow that was taken here, the baker commodities rendering plant in california. it was about to be ground into pet food when a random test discovered the illness. the u.s.d.a. stressed there was never a danger to humans from

the cow's meat or milk because no dead cow is ever slaughtered for human consumption. the u.s.a.d.a.'s chief veterinarian is john clifford. >> this particular animal never entered the food supply at any time. there was no concern about that. >> reporter: scientists we contacted agreed there was no risk to the public. the diagnosis with a a atypical bovine spongiform encephalopathy. atypical also means that the cow did not get sick from other cows or from eating a banned type of animal feed composed of other animals. >> it is not likely to be attributable to infected feed, which is the method in which normally bse would be spread from cow to cow. >> there have been three deaths in america from mad cow disease, a brain wasting infection with no cure, but all three victims had spent many years eating beef

overseas. no american is known to have died from consuming u.s. beef since the increased testing began thine years ago. still, there are two concerns -- beef exporters are already worried that consumers in asia will hear the words mat cow and slow down purchases of american beef and even though the atypical form of the disease is not known to be a problem. scott, no one knows what causes atypical mad cow and how many cases are going undetected. >> wyatt, you just said in your story, the new testing standards went into effect nine years ago, how many cases have they found in cows in that period of time? >> scott, there have been four total since 2003 and three of those were atypical like the one found today. only the very first cow found in washington state in 2003 had the infectious form of the disease, that could have posed a risk, had it reached the food chain. >> no danger to the food supply stays the government. wyatt, thanks very much. the health of the u.s. economy is tied to the housing market, and the latest news

about that today is mixed. the government reported today that sales of new homes dropped sharply last month, down more than 7%. but compared to a year earlier, sales were up more than 7%. anthony mason shows us where he found signs of a housing recovery. >> reporter: in phoenix, arizona, a busload of home buyers checked out foreclosed properties. >> do you have any questions about the home or -- >> reporter: for five straight months now in phoenix, one of the cities hardest hit by the recessio recession, house prices have been on the rise up another 1.2% in february. >> we're definitely seeing a turn in the market. >> reporter: michael orr, who heads the real estate isn'ter at arizona state university says suddenly, phoenix is a seller's market. >> i'm hearing a lot of frustration from people who want to buy and finding that whenever they find a home, there's five other offers already in.

>> reporter: in our other cities -- denver, detroit, miami and minneapolis, prices also rose in february. but in 15 major markets, prices fell again, nine hit new post-recession lows, including atlanta, where prices are down more than 17% from a year ago. foreclosures continue to drag down prices, but the inventory of new homes on the market has been plummeting, and has now fallen to levels not regularly seen since early 2006. some economists believe that's laying the foundation for a housing recovery. >> i think it's going to be this time next year. >> mark zandy with moodies analytics sees construction picking up significantly by then. >> more importantly, we'll get consistent house price gains by the spring of 2013 selling season. and when that happens, i think housing will become a tailwind for the economy, which obviously would be a huge plus. >> reporter: mortgage rates are still near record lows. of course, it's been difficult to get a loan, but a federal

reserve report this week shows real estate lending turning positive for the first time in more than two years. >> anthony, what are some of the signs you're looking for in a housing recovery? how will we know? >> reporter: the key thing here, scott, is that prices follow sales. we're looking for sales to pick up and there are signs of that. it's apparent that the market seems to be stabilizing but it's a long, slow turn. >> mark zandy just said in your piece that he is looking for a turn next year. what would that mean to the broader economy and jobs in particular? >> reporter: well, housing has been a headwind. it actually has been a problem for the economy. if it welcomes a tailwind people start to feel a little wealth yier because their house is worth a little more and financial information prove more pocketchange and people start to spend. >> a lot of jobs were lost in construction and if that turned around -- >> he'd come back, too. >> there are some early signs of a housing recovery in los angeles. ben tracy tells us that in one neighborhood bidding wars and house flippers are back for the first time since the bubble

burst. >> reporter: so, when did you guys move in? >> we moved in at the end of may. >> reporter: adam bauer bought this house in los angeles ten months ago with his brother, logan. they paid $10,000 more than the asking price. >> i had no concern, like it just really felt good. you can't go down any street really without seeing a change or home that's under renovation. >> reporter: their house in the highland park neighborhood is the work of flippers, investors who buy houses in foreclosure, fix them up and sell them. >> just on our street alone, there have been eight homes that have flipped since we moved in. >> reporter: just a year ago, only 1% of the homes sold in highland park were bought by investors. this january, 43% of them were. nationwide investors accounted for 23% of home sales in february, attracted by low prices and record low interest rates. >> whe when you guys bought this house was this pretty much a beater? >> it was. it was a heavy, heavy fixer. >> reporter: house flipper,

matt, bought this foreclosed home in highland park and turned it into this. he sold it for a $90,000 profit. how many flips have you done this year? >> we sold 17 last year and now we have 12 in the works we plan on doing 20 to 34 this year. >> reporter: during the housing bubble, flippers helped inflate prices and they're stabilizing values and they're luring buyers. the flippers are making it harder for people to sell homes like this one that have not been redone. these folks are competing with the remodelled home just three doors down the street. that house, now has a sold sign in front of it. >> prices have already gone up. so, we would not be able to purchase this home today for what we paid for it. >> reporter: and that's a move the housing market hasn't seen in years. ben tracy, cbs news, los angeles. >> on wall street, after yesterday's triple digit loss, stock prices rallied today. the dow gained 74 points, nudging the blue chip index back

over 13,000. this is another republican primary night. the first since mitt romney became the presumptive nominee after rick santorum dropped out. five states including new york and santorum's home state of pennsylvania are voting. romney has 692 of the 1,144 needed to clinch the nomination. there are 219 at stake tonight. so, not enough to clinch even if he won them all. we also want to correct something we told but last night. we said that governor romney believes that arizona's controversial immigration law is a model for the nation. turns out, the governor feels that way about a different immigration law. he likes the requirement that businesses have to check the immigration status of all employees, but his campaign tells us that romney believes a provision in the law that allows police to question people about their status is not a model for the country. america's college graduates

-- buried in debt. am is making more iphones, ipads and iprofits. and a shower of lava as an aren't you volcano springs to life. when the "cbs evening news" continues. i'm the first licensed indycar driver with diabetes to finish the indy 500. i live in the fast lane. i need on-the-go insulin delivery. that's why i use novolog® flexpen®. flexpen® is prefilled with my fast-acting insulin. i dial my exact dose. inject by pressing a button. flexpen® is insulin delivery my way. novolog® is a fast-acting insulin used to control high blood sugar in adults and children with diabetes. do not inject if you do not plan to eat within 5 to 10 minutes after injection to avoid low blood sugar. tell your healthcare provider about all medicines you take, and all of your medical conditions, including if you are pregnant or breastfeeding.

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>> president obama began a tour of college campuses today looking to shore up support among young voters. they were key to his success in 2008. speaking at the university of north carolina, mr. obama urged congress to keep the interest rate on federally guaranteed student loans at 3.4%, the rate is set to double in july. >> there's one specific thing that congress needs to do right now to prevent the interest rates on student loans, federal student loans, from shooting up and shaking you down. >> graduates are leaving college these days with an average of $25,000 in student debt, and for some, the burden has become a life-changing lesson. elaine kejano has the story. >> ray-ann roka graduated from ohio northern university five

years ago with $70,000 in student loans. add in interest and her balance is now $106,000. >> when you think about that figure, $106,000, what does that mean to you? >> most people who owe $106,000 in debt have a house or a couple of cars or a few houses, and i don't have that. i have the basic necessities that i need to survive. >> reporter: at 28, roka works in public relations in washington, d.c. 25% of her monthly income goes toward her loan debt. the studet loans delayed your wedding? >> the student loans delayed my wedding. the student loans will probably delay me ever buying a house with my fiance. will probably delay my fiance and i having children because these are things -- these are luxuries we cannot afford. >> reporter: the average cost for a four-year college degree was more than $22,000 in 2010. that's 67% higher than in 1990. isaiah tony is a member of the

class of 2012 at george washington university. the sociology and women's studies major says he will graduate with approximately $85,000 in loans. >> i'm 22. how i do know how much $85,000 is? you know, it's the single biggest purchase i have made in my life. >> reporter: tony had considered becoming a teacher or studying abroad, but his debt has narrowed his options. >> it's just slow realization that you know, you won't be able to pick the kind of job you really want or you won't be able to travel or -- or give back to your community in ways that you want. >> i don't ever see a time in my life where i won't be paying my student loans. >> reporter: how you will get out of this? >> hopefully, some of these relief packages will pass, and hopefully, they will help millions of borrowers, especially myself. >> reporter: and in the mean time? >> in the mean time, i pay my bills every month. >> reporter: rayann roka estimates the earliest she will be able to pay off the first of

his six loans will be in the year 2022. cbs news, arlington, virginia. >> no money woes at apple, which reported an amazing harvest today. the world's most valuable company says it earned $ 1.6 billion in the first three months of this year. nearly double what it earned a year earlier. apple has sold more than 35 million iphones this year and nearly 12 million ipads. an arrest today in the worst accidental oil spill in history, the bp disaster. that's next. she needs help from me. and her medication. the exelon patch -- it releases medication continuously for twenty-four hours. she uses one exelon patch daily for the treatment of mild to moderate alzheimer's symptoms. [ female announcer ] it cannot change the course of the disease. hospitalization and rarely death have been reported in patients who wore more than one patch at a time. the most common side effects of exelon patch

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>> two years after the bp oil disaster, the first criminal charges were filed today. kurt mix, a former bp engineer faces two counts of obstruction of justice. federal prosecutors say mix intentionally deleted more than 300 text messages that said much more oil was leaking into the gulf than company was saying at the time. if convicted, mix could get up to 20 years in prison. rupert murdock's media empire was already shaken by the british phone hacking scandal, now it may be facing new trouble. at an inquiry in london today, murdock's son, james, had to explain emails that appeared to show murdock's company,

newscorp, got inside help from a top official in the british government when it tried to buy a satellite channel. james murdock denied doing anything illegal. tomorrow, his father, the chairman of newscorp will testify. it's not often that a book written 57 years ago jumps to the top of the best seller's list, but "a night to remember" walter lord's classic account of the "titanic" sinking is number one this week on "the new york times" non-fiction list. an electronic edition was just released to coincide with the 100th anniversary of the tragedy. it was downloaded 30,000 times. we came across some pictures to remember today from mt. etna in sicily. the volcano came to life again last night, sending up huge geysers of molten lava. look at that. mt. etna has erupted seven times this year, but so far, no one in the surrounding area has been evacuated. and this may seem like science fiction, but today a

group of space pioneers announced plans to mine asteroids for precious minerals, within ten year, they say. robots could be extracting gold and platinum from asteroids as well as elements for rocket fuel. the group is headed by a pair of silicon valley millionaires and backed by the filmmaker, james cameron. from a refugee camp in thailand to a new life in america, a family's remarkable thailand to a new life in america, a family's remarkable journey, when we come back. tha. and even fewer that make moms happy too. with wholesome noodles and bite sized chicken, nothing brings you together like chicken noodle soup from campbell's. it's amazing what soup can do. 8% every 10 years.age 40, we can start losing muscle -- like chicken noodle soup from campbell's. wow. wow. but you can help fight muscle loss with exercise and ensure muscle health. i've got revigor. what's revigor? it's the amino acid metabolite, hmb to help rebuild muscle and strength naturally lost over time.

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>> finally tonight, america is a nation of immigrants, most of our ancestors came from somewhere else. maybe that's why the u.s. department of state accepts more refugees into this country than all the other countries of the earth combined. 72% of the people who are resettled as a result of war or persecution are welcomed here. we wanted to show you how, so we asked seth doan to catch up with a family that fled the long civil war in burr ma in southeast asia and arrived in a strange and wonderful place, today. >> reporter: the auli family landed in syracuse, new york, today, refugees from tropical

burr ma, they came with no coats, no savings. just an american dream. i'm just hoping for a job, muhammad told us, and a better life for my family. we met the family earlier this month in a refugee camp in thailand. here they were getting lessons in american life. >> do you see any firewood here? >> reporter: muhammad's wife marved at an oven. >> we have hot water and cool water. >> reporter: in this mockup of a western-style home, many things that are routine in america seemed unknown here. >> please show me, how do you use that. >> reporter: muhammad came to this camp of 47,000 when he was just 15. there are more than a dozen of these camps along the burr ma border. some have been here for 30 years. they're safe havens for ethnic minorities who fled villages destroyed by burr meese soldiers.

when i was in burr ma, he told us. burr meese soldiers discriminated against simple people like us. i just could not bear it anymore. muhammad told us that he cannot go back to burr ma and he can't find work in the camp. for him, the only option is to leave for good. since 2006 around 55,000 burmese refugees once living here in thailand have been resettle to the united states. 20,000 from this camp alone. >> the majority of the students have lived here longer than 15 years. >> reporter: sarah kauffman works for the international rescue committee which helps prepare refugees for the culture shock of life in north america. >> they learn about employment, finding a job, the education system, u.s. laws, transportation, international travel. a lot of different topics. >> reporter: in a relatively short period of time. >> maximum, five days. >> do you have a place like this at home? >> reporter: what they lack in practical skills, kauffman said, won't prevent them from

succeeding. >> many have strong family values. they take care of their children this they value education. these things will be useful in the united states. >> reporter: i would like to have a better opportunity for my family, muhammad told us. i hope for a better life, and equality. >> hello! welcome! >> reporter: today, he and his family took their first steps toward that american dream. seth doan, cbs news, thailand. >> the most generous country on earth. that's the "cbs evening news" for tonight. for all of us at cbs news all around the world, good night. captioning sponsored by cbs captioned by media access group at wgbh

now "entertainment tonight," the most watched news magazine in the world. >> unbelievable. >> and after their dancing blowup. >> this is "dancing with the stars," soap opera version. >> son of a [ bleep ]. >> why they're fighting mad, but not at each other. >> they do [ bleep ]. >> and backstage with the stars and co-hosting with me. i hear that one of the stars gave the number. >> wow. >> way to put me on the spot, nancy. >> jennifer hudson, the latest from her family's murder tri