little breaking news on the campaign trail, but i also have chairman paul ryan, he'll join me on the republican leadership fight and we have the breaking news, which is hillary clinton's newly announced opposition to the asian trade agreement known as tpp. we'll also have the latest on president obama's official apology for the air strike that hit doctors without borders in afghanistan. and we have a look at the archives. why a bobby kennedy speech from five decades ago is getting a lot of attention this week. but first, let's hit the press box and like i said, it's all about iowa, with a little bit of new hampshire thrown in. kristin welker is with the clinton campaign. katy tur is in my dad's hometown of waterloo. jordan frazier is with jeb bush, and hallie jackson is covering the marco rubio campaign in the other early state, new hampshire. but let's start with hillary clinton and a big announcement late this afternoon. hillary clinton has just come out against the transpacific partnership trade agreement.