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Should president obama be concerned? >> i'm sure the white house is concerned about any potential candidate. ron paul of course has run before. has a loyal following and what's been fascinate for me is how much he has a loyal following amongst young people and the money that he can raise. so he's a threat obviously on a certain level. but at the same time, you can't beat somebody with nobody. and at the moment, i don't see that somebody yet that the president should be all that concerned about at least to the point of losing sleep. >> not newt gingrich? what if sarah palin runs? what republica...

the killing of osama bin laden, new details. we have correspondents covering all angles. they'll join us at the top of the hour. but first politics. ron paul wants president obama's job. he announced his intentions earlier today and plans a news conference at the top of the hour. the republican congressman joins newt gingrich in the gop race for the white house. a long time political observer, broadcaster and businessman has a new book, fail up, lessons from building successes from failure. tavis, welcome. >> good to be on. >> i want to talk about your book in a little bit, but fir...