GOP presidential contenders on Ukraine. Trump goes after DeSantis again. Buck doesn't like the "DeSanctus" nickname. Trump voters call in, want him to stop attacking DeSantis. David McCormick, former hedge fund CEO and PA Senate candidate, talks to Buck about breaking news and his new book: "Superpower in Peril: A Battle Plan to Renew America." Buck takes calls, including a Florida Trump voter not bothered by attacks on DeSantis.