The US government is implementing stricter visa regulations for foreign students, journalists, and exchange program participants, specifically targeting Chinese nationals. The Department of Homeland Security announced a final rule establishing fixed admission periods for F student, J exchange visitor, and I visas. This move represents a significant tightening of rules in these visa categories, not seen in decades. Officials state the changes are part of a broader effort to enhance national security and curb both legal and illegal immigration. The new regulations will likely impact the length of stay permitted for individuals in these programs. Critics argue the restrictions disproportionately affect Chinese citizens and could hinder cultural and academic exchange. The White House maintains the policy is necessary to protect national interests.