President Trump’s China strategy is failing. His tougher approach has yielded no meaningful Chinese concessions but is increasingly damaging the U.S. economy. Today China is more integrated with the rest of the world while the U.S. is more isolated. To combat China’s unfair, statist economic practices effectively, the U.S. must change its approach, enlisting allies and international institutions to advance a more focused set of demands.

Tariffs on China have caused clear harm to the U.S. economy in the short run. In the second...