Tariffs, aid cuts, and visa limits tied to Donald Trump’s foreign policy are weakening U.S. standing in Southeast Asia, while China’s pull keeps growing, the Sydney-based Lowy Institute said in a report released Wednesday. The think tank ranks Washington behind Beijing as the region’s most influential outside partner, pointing to “patchy” U.S. diplomacy. China, it says, has built a steady presence through trade, investment, and regular high-level outreach across capitals in the 10-member bloc and its neighbors.