Jeb Bush's advice for Romney: Pick Rubio!

Not only did former Florida Gov. Jeb Bush offer up his endorsement to Mitt Romney yesterday, he also offered the GOP presidential hopeful some friendly advice on picking a potential running mate:

Bush, 59, the son of a president and brother of another, pushed aside any interest in running with Romney. But he has strong feelings on whom he wants Romney to pick as a running mate.

"Marco Rubio," he said of the freshman Florida GOP senator, who served as a volunteer on Bush's governor's campaign. Bush described Rubio, 40, as "dynamic, joyful, disciplined and principled."

"He is the best orator of American politics today, a good family man. He is not only a consistent conservative, but he has managed to find a way to communicate a conservative message full of hope and optimism," Bush said.

It's a ringing endorsement for sure, but Sen. Rubio has repeatedly insisted in the past that he will not seek higher office in 2012.  Could there be a change of heart?