The administration of United States President Donald Trump said on Monday that it plans to revoke the non-immigrant visas of foreign nationals who have applied for or are seeking asylum in the United States, in its latest move to tighten immigration controls.

A State Department spokesman said the department was working with the Department of Homeland Security to identify and revoke the visas of foreigners who entered the U.S. as short-term visitors but later applied for asylum to remain in the country permanently.

The State Department did not disclose how many visas could be revoked under the planned policy.

However, the Associated Press reported that up to 200,000 foreigners could have their business and tourism visas revoked. If implemented at that scale, the move would represent the largest single mass visa revocation in U.S. history, according to AP, which cited State Department documents and two U.S. officials.

The report said the State Department plans to revoke B1 and B2 visas issued between 2016 and 2026 to holders who have applied for asylum or are currently seeking asylum in the U.S. B1 and B2 are non-immigrant visas issued to foreign nationals travelling to the country for business and tourism.

The planned visa revocations would not automatically lead to immediate deportation, according to the AP report. It said most foreigners with pending asylum applications would instead be reclassified, although they would lose their status as business or tourism visitors.

Earlier on Monday, Deputy Secretary of State Christopher Landau alleged in a post on X that the U.S. immigration system “has long been swamped by frivolous asylum claims.”