I didn't realize I could google "1878 thing" and "Posse Comitatus Act" would be the response.
Lets try that and see what I get. Hmmm, the first item listed is "Daisy Miller by Henry James". The second is "The Indian Treasure Trove Act". The third is "Claude Bernard". As I look down the page I don't see "Posse Comitatus Act". Maybe Mr. Duhhh should have been more specific in his criticism of me, for all I know he's a Henry Miller fan (and thus probably gay).
Besides, my post had nothing to do with Posse Comitatus. I was pointing out to the OP that martial law had been imposed in the US before, contrary to his statement.
I suggest you and Mr. Duhh spend a little more time working on your reading comprehension and debating skills, and a little less time on whacko conspiracy theories.