The South Carolina Republican was a steadfast ally for Donald Trump in Congress, but he voted to impeach the former president after he experienced the attack on the Capitol. Now, Trump has endorsed a primary opponent. And Democrats contend with how to reform the Iowa caucuses after 2020's goat rodeo.This episode: White House correspondent Asma Khalid, senior political editor and correspondent Domenico Montanaro, South Carolina Public Radio reporter Victoria Hansen and Iowa Public Radio reporter Clay Masters.Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.