With dozens of freshman Republicans heading to Washington DC in the next few days, advice will be in large supply as they prepare for the transition from campaigning to governing. Tea Party activists sent them to the Beltway with clear mandates on spending, debt, and checking the growth of government, but Americans have seen what often happens when Mr. and Mrs. Smith go to Washington. A curious case of Congressitis sets in, where suddenly the potential power of their office overwhelms the sensibilities that got them elected in the first place. Sarah Palin has been there and seen it first...