特朗普政府要收紧国际学生签证？何时生效？怎么调整

Core Viewpoint - The proposed rule by the U.S. Department of Homeland Security aims to change the visa regulations for international students and scholars, potentially limiting their stay in the U.S. and increasing the complexity of visa management [3][4][6]. Summary by Sections Proposed Changes - The current "Duration of Status (D/S)" for F, J, and I visa holders will be replaced with fixed stay periods, with F and J visa holders allowed to stay for the duration of their program or a maximum of 4 years, whichever is shorter [3][6]. - The maximum stay for foreign media representatives will be limited to 240 days [3]. Impact on Students - The new regulations may significantly affect international students, particularly those pursuing undergraduate and doctoral degrees, as the average time to complete these degrees exceeds the proposed limits [3][4]. - F-1 students will face stricter rules regarding course changes and will only be allowed to pursue higher-level degrees after graduation [6][7]. Application Process Changes - The grace period for F-1 students after completing their studies will be reduced from 60 days to 30 days [6][7]. - Students wishing to extend their stay will need to apply directly to the U.S. Citizenship and Immigration Services (USCIS) [6][7]. Public Response and Concerns - Various educational organizations have expressed opposition to the proposed rule, arguing it will create unnecessary burdens and uncertainties for international students and institutions [12][13]. - Concerns have been raised about the potential negative impact on the U.S.'s attractiveness as a destination for international students, with a reported decline in student numbers [14]. Future Process - The proposed rule is currently in a public comment phase, which will conclude on September 29, 2025, followed by a review of feedback and potential modifications before final implementation [11].