Former 2020 Democratic candidate Julián Castro joins AM JOY on MSNBC on what he plans to do after withdrawing from the race. He comments on the role of money in politics, and also tells Joy Reid, 'Ahead of 2024, I believe the DNC should look at the order of states,' regarding Iowa. Plus, Sen. Ben Cardin (D-MD) joins Joy Reid to discuss the U.S. airstrike that killed Iranian general Qassem Soleimani, saying, 'There is no authorization to use force against Iran. The imminent threat--we don't know about it.' Former U.S. ambassador Michael McFaul also joins, saying, 'What is scary to me is that there does not seem to be a process in place to develop and implement a national security policy.' Plus, national campaign chairman for Mike Bloomberg, former Philadelphia mayor Michael Nutter joins the show to discuss Bloomberg's record in New York, and how it relates to his presidential aspirations. Joy Reid is joined by these and even more expert guests who bring you the latest analysis of the most important political stories of the week, in this Sunday edition of AM JOY on MSNBC.