@Sanguine @INVARYes. They will.
You watch.
That is, if Trump even bothers to declare one beyond mere words and tweets.
If it is technically necessary to declare martial law with or without a formal declaration of a State of National Emergency distinct from the one that is already in place through 2019, then Trump will declare martial law. Martial law, however, may not even be needed to protect the border against foreign incursions. Whatever he does, with or without "martial law" is likely to be challenged by a federal judge from Hawaii (LOL).
I believe that the corruption of our federal courts at this critical point in American history is the main reason why Trump wanted Kavanaugh confirmed to the
SCOTUS BEFORE the November election. I am pretty sure Trump did not specifically anticipate the Central American Caravan, but I'll bet he is not terribly surprised.
I assume that Trump assumes that the Caravan is a Global Socialist attempt to trigger insurrection
inside the U.S. in the time frame of the election. (I think we can assume that whatever Trump does in defense of the border will be characterized by the MSM as illegal and inhumane. The libs will be hoping for deaths of immigrants--which will be extremely inflammatory to groups like Antifa. A massive domestic insurrection would/will, in turn, trigger martial law, I think--arguably under the existing State of National Emergency [December, 2017].)