Trump says that if the caravan reaches the border he will deploy the military. Can the military be used on American soil?

@PainfulTruth yes, i am familiar with the few and narrow circumstances it IS allowed, ...

[quote]The Posse Comitatus Act of 1878 prohibits the use of U.S. military forces to perform the tasks of civilian law enforcement such as arrest, apprehension, interrogation, and detention unless explicitly [b][i]authorized by Congress[/i][/b].[/quote]

...as well as a number of historical instances when it was done Illegally, like during the "bonus march"
BUT legally deploying the us armed forces is SUPPOSED to be a very difficult thing.
no also, that the "War Powers act" has not been enforced for over 30 some years.

both Bush 2 and Obama sent US [i]national guard[/i] troops to the border

that said,
there is no threat to the US from a convoy of people headed to the border, as they do have a [i]right to apply[/i] for sanctuary at that time, [i]at the border post[/i]

so where is threat sufficient to

@PainfulTruth yeah, there is some vagueness there as well, the P C act above, has the details if you read the entire thing