No, he wouldn't have. He's not Catholic himself, (Neither am I, of course0 but he was the only Republican (At least IMO) that was anywhere close to believing the Just Warr ethic. I suppose, of course, that that does depend how you define a Just War.
I honestly can't defend the rest of Evangelical-dom on anything related to America. They're simply wrong.
For the record, your hero Rick Santorum believes in American Exceptionalism as well, even if he doesn't put it that way. Just listen to what he says about terrorists and why they attacked us
Santorum is also on record for having apparently told someone who asked him some tough question about spending he had voted for "Just vote for Ron Paul."
oh, and Santorum voted to fund planned parenthood: Multiple times. By voting against every budget, Ron Paul has ensured not to do this