A major legal fight is now underway that could determine whether hundreds of thousands of international students keep their current immigration status — or face a hard four-year cutoff that was never part of how F-1 visas worked before.

Forbes reported on August 19, 2026, that a coalition of university groups and labor unions filed a lawsuit to block a Trump administration rule that would limit F-1 and J-1 visas (the visa categories used by international students and exchange visitors, respectively) to fixed four-year periods. The rule was finalized in July 2026 and is set to take effect September 15, 2026.

Key Points

  • What: A lawsuit filed by university groups and labor unions seeks to block a DHS rule that limits F-1 and J-1 visas to a fixed four-year duration.
  • Who: F-1 international students, J-1 exchange visitors, their universities, and employers who rely on international talent.
  • When: The rule is set to take effect September 15, 2026; the lawsuit seeks to block it before that date.
  • Impact: If the rule stands, students whose programs or OPT extend beyond four years could face a loss of legal status unless they reapply or depart.

What the Rule Does

Under the current F-1 system, students are admitted for the duration of their status (commonly called "D/S" on their I-94 form), meaning they can remain as long as they are enrolled and maintaining valid status. The new DHS rule, according to Forbes, would replace that open-ended framework with a fixed four-year cap — students would need to take affirmative steps to extend their stay beyond that window.

For many international students, four years is not enough. PhD programs routinely take five to seven years. STEM OPT extensions alone run up to three years after graduation. A hard four-year limit would cut across those timelines in ways that could force students out mid-program.

Why Plaintiffs Say the Rule Is Unlawful

According to Forbes, the plaintiffs argue the rule is "arbitrary and capricious" — a legal standard under the Administrative Procedure Act (APA) that courts use to strike down agency rules that lack reasoned justification. Specifically, they contend that:

  • DHS's stated rationale, including national security concerns, relies on weak anecdotal evidence rather than real data.
  • The agency failed to meaningfully engage with the large volume of public comments submitted during the rulemaking process.
  • The rule would cause severe economic and academic harm, including reduced international enrollment and weakened university finances.

The lawsuit seeks a court order blocking the rule before September 15.

What Isn't Known Yet

Forbes did not report which specific court the lawsuit was filed in, which judge is assigned, or whether the plaintiffs have requested an emergency injunction (a temporary court order to pause the rule while the case proceeds). Those details matter enormously — a court could issue a temporary block within days, or it could let the rule take effect while litigation continues. It is not yet clear.

What You Should Do

If you are an F-1 or J-1 student, pay close attention to what happens in the next few weeks:

  • Watch for a court ruling before September 15. If a judge issues a temporary restraining order or injunction, the rule may be paused. If not, the rule could go live.
  • Talk to your international student office (DSO). They are tracking this closely and will have the most up-to-date guidance for your specific situation.
  • Do not assume the rule will be blocked. Plan as if it could take effect. Know when your four-year mark falls and what steps may be needed to extend your status.
  • Do not take action based on this article alone. Consult with an immigration attorney or your DSO before making any decisions about your enrollment, visa status, or travel.