This comes a few months after a failed plan to strip international students of their visas if they are not required to attend some classes in person, during coronavirus lockdown, in July.

The new guidelines from the Department of Homeland Security (DHS), if approved, mean affected students will be barred from four-year courses in the US.

It was not immediately clear if Nigerian students currently studying in the US would be affected.

In the new measures published in the US federal register and scheduled for announcement on Friday, the DHS proposed a “maximum admission period of up to 2 years for certain students”, including those from Nigeria.

Among the countries targeted in the new policy are those on the US “State sponsor of terrorism list” and students from countries that visitors have overstay rate of more than 10 percent.

“A key goal of shifting aliens in F status from D/S to an admission for a fixed time period is to provide pre-defined time periods for immigration officers to evaluate whether a nonimmigrant has maintained his or her status,” the DHS said.

“If an immigration officer finds that an alien violated his or her status prior to or during the course of an EOS adjudication and denies the EOS request, the alien generally would begin accruing unlawful presence the day after issuance of the denial.”

It also said that the proposed rule seeks to reduce instances in which F, J, and I nonimmigrants — mostly students and exchange visitors — “unlawfully remain in the United States after their program or practical training ends.”

“Under this proposed rule, aliens who remain in the United States beyond a fixed time period generally would begin accruing unlawful presence,” it said.

Following the coronavirus pandemic, the Trump administration was in July forced to abandon a plan to strip international students of their visas if they are not required to attend some classes in person.