dr. zeke emanuel from the university of pennsylvania.ou very much for your invaluable clarifications on this issue. thanks for joining us. >> thank you very much. >> thank you. >>> coming up, is the obama administration really in trouble? rumors of white house infighting and worry among democrats have team obama going on the offensive. >>> and later, no rumors here. the republican presidential candidates are more than happy to beat each other up in public and the late night comedy writers are very grateful. the funniest moments of the week in late night comedy are coming up. >> so, ah, your seat good? got the mirrors all adjusted? you can see everything ok? just stay off the freeways, all right? i don't want you going out on those yet. and leave your phone in your purse, i don't want you texting. >> daddy... ok! ok, here you go. be careful. >> thanks dad. >> and call me--but not while you're driving. we knew this day was coming. that's why we bought a subaru. so i take one a day men's 50+ advantage. as a manager, my team counts on me to