National Guard must be called up by the state’s governor, IIRC. Are the border governors refusing? Or does Trump not want to have to worry about chain of command issues?
No, I think Trump is serious about this and will not allow unarmed National Guard troops to be killed by drug lords during this.
National Guard can be nationalized and there is no issue with chain of command. But the issue is reliable experienced soldiers who are already up to speed.
I assure you the the Governor of Texas is already cooperating with the active military. And expect AZ is same way. Not sure about NM. Of course CA will be nutty as always. That is why the convoy is targeting CA. But CA is still a long way away. McAllen, TX is much closer. Texas will not allow it being over run.