The U.S. Donald Trump administration announced on the 16th (local time) that it would abolish the ‘Duration of Status (D/S)’ system introduced in 1979 to facilitate the entry of overseas students. Accordingly, starting September 15, the period of stay in the United States for international students (F visa), exchange students, and visiting researchers (J visa) will be limited to a maximum of four years. Until now, you could stay in the U.S. indefinitely if you continued your studies, but now, after four years, you must undergo a review by the U.S. Citizenship and Immigration Services (USCIS) under the Department of Homeland Security and receive separate extension approval. The period of stay for I visas issued by the U.S. to foreign journalists has also been significantly reduced from 5 years to 240 days. In particular, Chinese journalists defined it as much shorter, 90 days. This means that correspondents from various countries in the United States must obtain approval for extension of stay every 240 or 90 days. This rule applies to existing visa holders as well as new applicants for the visa. As a result, there is an assessment that the uncertainty of studying abroad in the United States has increased.