Pick, don't bet on U.S.
I'll pick the Stars and Stripes.
You can justify the pick like this: Even though the Americans have lost four straight on the road, they've won two of their last three in the land of the free. Plus Tiger Woods is to Chicago golf what pre-busted Lance Armstrong was to the Tour de France. Woods won the last two majors played at Medinah.
But the Europeans have the better putters (Luke Donald, Rory McIlroy, Ian Poulter) and the whole team unity thing that helps them in alternate shot and best ball.
So if you gave me $1 million and told me I had to throw it on the favored Americans...