Posse Comitatus Act DOES NOT APPLY TO THE BORDER AND ALIENS.
Neither does it apply to the US citizens who are on the other side of the border, paying for and fomenting the invasion. They are fair game, and prime targets.
I don't believe a single Honduran will get hurt, and I don't believe the caravan will reach the border. They will stop or scatter when their "leaders" are no longer leading.
Then their bosses here in the US will complain, and by so doing, will convict themselves.
Actually, the Posse Comitatus Act and HOW it comes into play regarding the NG and other troops confronting the horde of invaders at the border was just discussed on FOX news.
Federalizing the NG at the border was mentioned. Did anyone hear the entire segment?