There are news reports about that someone (not Bill Barr) in the Justice Department on January 19 (the day before Biden was sworn in as president) signed a union contract with the union representing Border Patrol agents. In that contract, it is alleged, the federal government cannot now change immigration policy (if it affects Border Patrol employees) without first getting clearance from the union.
I don't actually know whether the story is true or not - but I've never heard of such a thing before. If true, it seems to give the union veto power over America's immigration policy. Is it possible that a union contract signed by one administration could bind POLICY decisions by future administrations? Could it affect the ability of Congress to enact a new Immigration law (as unlikely as it seems that Congress could reach an agreement on Immigration or much of anything else)?