Obama deserves credit for helping to push the struggle for same-sex marriage to a successful conclusion, for appointing some highly capable judges (despite flaws in their judicial philosophy), and for causing the Supreme Court to establish some valuable precedents protecting federalism, property rights, and religious freedom (albeit, often unintentionally). On the other hand, we may well have occasion to rue his overly expansive approach to executive power, particularly when it comes to initiating wars without congressional authorization.