They happen to be Marco Rubio and Paul Ryan.
Ryan months ago proposed a plan that initiated the honest discussion that is now leading to the fiscal pact about to be enacted. And what he proposed is still better than anything proposed since.
Rubio yesterday on the Senate floor offered the most cogent analysis of the situation that we've heard:
Too bad they're still too inexperienced to lead a national ticket. In the best case, they can do so in 2020. In the worst, in 2016.