Jeb Bush tells Bloomberg Businessweek that “under no circumstances” would he join Mitt Romney on the Republican ticket this fall. Bush favors a vice presidential bid for Marco Rubio, saying “he’s certainly got the intellectual acumen and fortitude to be a good president.”

Bush also offers the following thoughts about the differences between Romney and President Obama:

Pinpoint the differences between the president and Mitt Romney and what this debate ought to be about.
The difference is the role of government in our lives and in creating an environment where we can get back on track economically. Those are the driving issues. Huge differences of opinion on that. And I think that’s where the campaign plays out. President Obama is making a case that economic security trumps everything else. I think it’s a false choice, but he’s saying if we redistribute wealth, more people will benefit, receiving the chance to be secure in their economic livelihood. Romney’s approach is the one that’s, I think, more traditional in our country, which is to say we need to create a climate of opportunity where people succeed and fail, with government playing a role in building capacity, playing a role for infrastructure, but not trying to pick winners and losers.