he will give the biggest speech of his political career accepting his party's nomination and making the case for a romney presidency. the talk this morning, though, is focused on romney's running mate paul ryan who really fired up the convention crowd with a wide ranging attack on president obama's record and really his entire philosophy. i am joined by white house correspondent brianna kiehlar to walk us through this address. >> he hit him on the economy and it was the house budget chairman doing so and the romney campaign thinks he is a good messenger for this. in this election tha...