As long as he stays there, or in France, the U.S. can't legally touch him. I'd guess he won't be doing any travel to anywhere that is apt to bust him and send him back to California.
I wrote about the case here, and while there are a bunch of folks who will undoubtedly celebrate this as a victory of some kind for the arts, I don't see it that way. He wasn't arrested because he was a bad director, because he was -- and is -- top-of-the-line good at that. He was busted for plying a little girl with booze and ludes and raping her.
Just another example of how the laws are different for the rich than for the poor.