>>519722921
State law Does apply to Federal Agents, the two jobs are not so aligned that Feds can, for instance ignore speed limits or property rights without probable cause.
HOWEVER, in the case of illegal aliens, and especially Alien Enemies, the Duty of Federal Officers to the several States, is exactly the removal of these individuals, And the Duty of the State is to effect their own protection in assisting, or at the least no impeding.

AEA allows Deputization, which is to say Posse can be enforced, should the President require, standing on Presidential Warrants and, suggested executed through US Marshal.
This means a Federal Officer can requisition the services of other officers until the Duty is complete.
States would be wise to consider the US Blessed that their officers are, generally, not being held in Operations, and the US has enough funding and men to do this without ceasing their regular enforcement duties.

https://www.youtube.com/watch?v=GUzS0pbmI-Y

>>518806220
This is where the fun begins