They can have chaos if they choose.
Gov. Abbott can not close the international bridges but he can have enhanced vehicle inspections on the roads just inside of the U.S.
Traffic would quickly back up and clog the bridge.
Complaints would be referred to president potato head and President Obrador.
Of course with the roads clogged it would be impossible to get transportation out of the areas of the international bridges.
Now you have illegal aliens on both sides of the border but not in BP custody as BP is busy with the vehicles and the illegals are just wading across the river where ever they like.
With no BP to feed them, give them bus rides, etc they will just stackup at a rate so fast even the locals will be demanding they just push them back across the bridges.
president potato head drops more points in the approval poles.
Chaos works both ways...
.
Actually I trust Obrador more about our border sanctity than Brandon.