How strenuously, and at what risk, should the United States resist China's efforts to dominate the South China Sea? An identification of three options along a continuum - from increased resistence to China's assertive policies on one end to a partial South China Sea retrenchment on the other, with current U.S. policy in the middle - captures the choices facing the United States. An analysis of China's claims and behavior in the South China Sea and of the threat that China poses to U.S. interests concludes that the United States' best option is to maintain its current level of resistance to China's efforts to dominate the South China Sea. China has been cautious in pursuing its goals, which makes the risks of current policy acceptable. Because U.S. security interests are quite limited, a significantly firmer policy, which would generate an increased risk of a high-intensity war with China, is unwarranted. If future China's actions indicate its determination has significantly increased, the United States should, reluctantly, end its military resistance to Chinese pursuit of peacetime control of the South China Sea and adopt a policy of partial South China Sea retrenchment.