President Trump has a new parlor game he's springing on advisers and confidants: JD Vance or Marco Rubio?That is, do people favor the vice president or secretary of state to sit atop the GOP ticket to succeed him in 2028? Trump asks casually, but increasingly, several sources tell us. Why it matters: Trump is focused on his legacy as his last midterm elections approach, and he believes there are no better standard bearers for it than Vance and Rubio.Trump favors Vance. It's why he chose him as a...