An increasing number of student deportation threats involve the revocation of visas based on relatively minor offenses like years-old misdemeanors, according to immigration attorneys, or sometimes no reason at all.

Federal immigration authorities have revoked the visas of at least 20 international students and three recent graduates from Virginia universities. Why it matters: The lives of international students are being upended as the Trump administration expands its revocation of student visas nationwide,

The Trump administration has revoked hundreds of international student visas nationwide, including those attending colleges and universities in California.

We are not aware of the details of the revocations or the reasons for them, but we understand these actions continue to take place at other institutions across the country," Harvard said in a post Thursday.

The university said eight students, at various stages of their academic journeys, unexpectedly lost their student visas.

The university was not notified and only learned of the changes by proactively checking a government database.

UC Merced is among the California colleges where international students have lost their visas amid a nationwide immigration crackdown by the Trump administration. A UC Merced spokesperson confirmed Wednesday that federal authorities revoked the visas of at least four international students.

As schools like Harvard, Stanford, Columbia and more say their international students’ visas are being revoked, lawyers say it’s all part of the larger plan to reduce immigration.

Nineteen students at the University of Texas at Dallas, 27 at the University of North Texas and others now face uncertainty about their ability to stay in the U.S.