 There's speculation Mr. Trump will name his vice presidential pick at any moment. The top three contenders, Ohio Senator J.D. Vance, Florida Senator Marco Rubio, and North Dakota Governor Doug Burgum, all scheduled to speak to Republican delegates at some point this week. Investigators still hunting for clues on what may have driven Thomas Matthew Crooks to try to assassinate former President Trump. The FBI is investigating that assassination attempt as a potential act of domestic terrorism.