Boston judge blocks four-year cap on student and journalist visas
Judge F. Dennis Saylor IV halted a DHS rule due to take effect on 15 September that would have replaced duration-of-status stays with a four-year limit for F and J visas and 240 days for most I visas. About 1.6 million F-visa holders and 500,000 J-visa holders are on the current books.

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A federal judge in Massachusetts on 14 September blocked a Department of Homeland Security rule that would have capped how long international students, researchers and foreign journalists can remain in the United States without applying for a fresh extension.
Judge F. Dennis Saylor IV, sitting in Boston and appointed by President George W. Bush, issued a preliminary injunction one day before the rule was due to take effect on 15 September. The plaintiffs are a coalition of university unions, higher-education groups and journalist organisations. Saylor scheduled a further hearing for 2 October.
For nearly five decades the United States has admitted F-visa students and many J-visa exchange visitors for the "duration of status": they could stay as long as they remained enrolled or in an authorised programme. The July rule would have replaced that with a four-year ceiling for F and J visas. Foreign journalists on I visas would have been limited to 240 days, or about eight months, instead of stays that can now run for years. Chinese journalists would have been limited to 90 days, with 90-day extensions.
Students would also have faced tighter rules on second degrees at the same level, changes of field and transfers between universities. Extensions would have sat with DHS officers. A refused extension would have been unappealable.
What the court actually said
Saylor wrote that the administration's reasons were "exceptionally weak" and that the claim the cap was needed to protect national security "borders on the absurd." Officials, he said, had not explained how a four-year limit would stop visa fraud. He found that the rule failed the Administrative Procedure Act.
He also recorded the scale of the existing system. About 1.6 million people hold F visas and about 500,000 hold J visas. Research universities such as MIT and Harvard carry large shares of foreign graduate students. Duration of status, he wrote, has allowed tens of millions of students and researchers into the country and has produced scientific work and economic activity "often on a vast scale."
DHS has argued that duration of status created "forever students" who enrol again and again to avoid leaving. The July announcement framed the cap as a way to restore control over nonimmigrant stays. Saylor said the record did not support that account of the problem or the chosen fix.
Who is affected while the injunction holds
PhD programmes in the United States commonly run five to seven years. Postdoctoral appointments often stack on top of that. A hard four-year clock would have forced those researchers to file extension requests in the middle of experiments, clinical trials and dissertation work. Biomedical laboratories in particular rely on international postdocs. STAT noted that the share of foreign researchers in the US life-science workforce is large enough that a sudden cap would hit output, not only enrolment forms.
Journalists on I visas would have faced a tighter clock still. A 240-day limit, or 90 days for Chinese correspondents, would have turned long-form foreign bureaux into a sequence of short tours. News organisations had joined the suit on that point.
The injunction freezes the new rule. It does not rewrite the older duration-of-status system. Students already in the country stay on their present terms for now. New arrivals will be processed under the old framework until a later ruling says otherwise.
The political setting
The Trump administration has narrowed several visa classes since returning to office. This rule was one of the broader attempts to convert open-ended academic and press stays into fixed terms with discretionary renewals. A Bush-appointed judge rejecting the national-security rationale on the eve of the effective date is a legal setback, not a final judgment. The government can appeal. The October hearing will test whether the plaintiffs are likely to win on the merits, which Saylor has already signalled.
Indian, Chinese, Korean and European graduate students make up a large part of STEM enrolment at the universities named in the order. Any later revival of the cap would show up first in those pipelines: fewer multi-year PhD offers, more mid-programme departures, and pressure on laboratories that cannot fill benches with domestic candidates at the same rate.
For this week the practical result is simpler. The rule that was due to start on Tuesday is on hold. Duration of status remains the governing idea until a court or a new regulation says it is not.