International PhD students to face strict limits on time in the US

TL;DR - The Trump administration is moving to impose stricter limits on how long international PhD students may remain in the United States, targeting so-called “forever students.” The change could affect research continuity and US universities’ ability to retain international talent.

• Nature published the report on 23 July 2026.
• The provided excerpt does not specify the proposed time limits or implementation details.
• Potential effects on visas, current students, and individual degree programmes cannot be determined from the supplied content.