6 states siding against a supreme court decision to deny access to federal authorities seems big, if thats happened in my lifetime I've not heard of it before
The most recent example of something similar I can think of is Eisenhower ordering the national guard in to force Arkansas to allow Ruby Bridges into a previously all white school. Of course, that that had a much narrower physical scope than the border. I don’t think the number of states whining means that much as several of them aren’t Mexico land border states so as a practical matter they’re just complaining/engaging in political theater.
Actual enforcement of the Supreme Court order is a mixed bag. It’s easy enough to have the feds reclaim specific crossing sites, and as this is more about political theater I think Abbot will buckle before actually telling the Texas National Guard to fire upon federal agents (and for that matter, those guardsmen risking themselves like that in the name of an election year stunt). The larger border with the razor wire is a different story as it’s easy for Abbot to send people back in to replace the wire after the feds remove it, and the federal government might decide it’s not worth the cost to keep removing it.
A coalition of Mexico, Cuba, Venezuela, and several other south and Central American countries invading a newly independent Texas to resubsume into Mexico would be absolutely hilarious.
Eisenhower sent deputy US Marshals, to escort Ruby Bridges to school in New Orleans. He federalized the Arkansas National Guard, to enforce the integration of Little Rock Central High School.