By Isabel Vincent and Jon Levine | NEW YORK POST

Republican leaders told The Post Saturday the letter underscores the administration’s capitulation at the border.

“This letter from senior federal law enforcement officers is crystal clear that under Joe Biden’s failed leadership the United States is facing a dangerous invasion threatening out national security and our sovereignty,” said upstate Rep. Elise Stefanik.

And all the more stunning in light of terrorist attacks on our own soil, said New York Rep. Nicole Malliotakis.

“It’s shocking that in a post 9/11 world that the Biden administration would have an open border policy with such lax vetting,” she said. “They are even allowing people with no real identification to board airplanes, which is directly against the 9/11 Commission recommendations.”