Because he is pandering. It is that simple.
Thirteen years ago he believed in outlawing political action committees.
Ramesh Ponnuru, after studying Romney’s position on campaign finance laws concluded that, "All told, those positions place him to the left of McCain-Feingold."
Don’t believe me? Watch (H/T Caucus Cooler):
It is a wonder that Romney’s hair doesn’t blow in the wind while the rest of him does.
By the way, I hope that Jim Bopp and Wisconsin Right to Life prevail today.