 Former President Donald Trump Tuesday reveled in the mounting turmoil surrounding Biden's campaign in the wake of their debate and teased the expected announcement of his Republican running mate with one of the top contenders, Florida Senator Marco Rubio, in attendance. After days of playing golf, Trump used his return to the campaign trail in Florida to ratchet up his attacks on both Biden and Vice President Kamala Harris, indulging speculation that she could replace Biden at the top of the ticket.