The Biden administration has opened a “clandestine operation” to process illegal immigrants on the U.S.-Mexico border in Texas, a setup that is leading to waves of migrants being released into the United States.

In a new video put out by Senate Republicans who visited the border late last week, a border agent said that the operation is off-limits to news cameras, though some of the 18 senators on the trip took videos, including one posted by Secrets Saturday from Indiana Sen. Mike Braun.