But Bush stopped short of a full-throated endorsement of the Florida lawmaker — perhaps because he's hoping his brother could still mount a bid for the Republican nomination. Earlier this year, he told ABC News he hopes that his brother mounts a bid.

“He’d be a marvelous candidate if he chooses to do so. He doesn’t need my counsel 'cause he knows what it is, which is ‘run,’ ” Bush said. “But whether he does or not, it’s a very personal decision.”