President Joe Biden’s Administration is using the little-known, small-scale, emergency parole process to allow many thousands of migrants to enter the country.

But a judge in Texas may force officials to shut this gateway through the nation’s borders.

Parole is an immigration procedure that grants certain noncitizens permission to enter the country under certain circumstances, such as a passenger with a heart-attack on an international flight that’s passing over a U.S. airport.

“Parole is supposed to be very limited authority. Given exceptional circumstances for people that have emergent medical needs, or are needed to testify in criminal proceedings that sort of thing,” Andrew Arthur, Resident Fellow in Law and Policy for the Center for Immigration Studies, told Breitbart News.

“The Biden administration, however, has expanded the use of parole beyond any recognizable point. It is now regularly using it to simply release illegal migrant and various other people into the United States,” he said.

Most recently, Biden has used the parole process to allow thousands of migrants from Afghanistan entry into the United States.