The Justice Department is suing Texas Republican Gov. Greg Abbott over a floating barrier that the state placed on the Rio Grande to stop migrants from entering the U.S.
Yes - same way Trump couldn't send in the military and had to rely on states' national guards to clear protesters before that infamous photo-op in front of the church
Your right, but OP was incorrect in using the word policing when the Act passed by congress actually uses the words "domestic" law enforcement; (imo) arguably this includes any action that stems from edit: ACTING enforcing laws on domestic, as opposed to foreign, soil. Further the exceptions allow for military to "provide" resources that support domestic enforcement officer which (again imo) would not extend to 'not providing/actually removing' resources that domestic enforcement officers do already have..
All that to say what the act does do is create a grey area that can be argued either way and which does force the federal government to have to think twice about using the military for such matters.. for better or for worse