Members of Congress returned to Washington today, after a break for Thanksgiving. They've already made a deal toward revamping the country's intelligence apparatus. And the House is planning to wrap up work on a $388 billion spending bill. There's already a lot of talk about Social Security and tax reform--priorities for the next Congress. At a time when money issues are taking center stage, commentator and economist Glenn Hubbard worries about one issue getting sidetracked.