I figured he was waiting until after the election. He had already done most of the actions. Hopefully gthis will make it harder for Mayorkas to intervene.
I suspect the Biden Administration will go after Abbott with everything they have to get this stopped, will it succeed who knows.
But look for not only the Biden Administration but activists and look for riots with violence if it comes to that. The Biden Administration would like nothing better than seeing some migrant getting abused on the Texas Border by the National Guard or Texas DPS, etc.