Subtitle: The solution to a dysfunctional Congress is not for Obama to govern the country all by himself. In the face of congressional gridlock, President Obama has started taking more and more matters into his own hands. In recent months, he has announced new gun control measures, put in place limited immigration reform and made fixes to the Affordable Care Act — all without Congress. Many liberals who once worried about presidential overreach have applauded his robust use of presidential power. Yet the president's increasing unilateralism shouldn't be cause for celebration. Bypassing Congress means bypassing democratic checks. It also means...