and that tweet appears to undercut his newest immunity claim. as the presidential primary season gets underway, donald trump will be the defendant in another case. on tuesday, just one day after the iowa caucuses, the defamation lawsuit filed against trump by e. jean carroll, it goes to trial. she's not seeking $10 million in damages, trump says that he plans to be in court next week. lawyers for e. jean carroll or asking the judge to limit what trump can say if he decides to testify. they point to trump's courtroom rant yesterday at his 300 and -- excuse me, 370 million dollar civil fraud trial. he's got a lot. now let's get smarter with the help of our leadoff panel tonight. jon allen is here, or senior national politics reporter for nbc news, and prize winning reporter for the new york times,