
Martial Law following definitions laid out here.
https://en.wikipedia.org/wiki/Martial_law_in_the_United_States?wprov=sfla1
This question is only about nationwide martial law, not about a local or isolated martial law declaration in one city or one state.
There might be a situation where enough states are in martial law for it to de facto count as federal (e.g. all states of the contiguous United States). I'll let the comment section decide in that edge case.
If trump declares martial law in only words, but doesn't act upon it. E.g. because he's bluffing or no longer in power to do so. Then this does not resolve to a YES (yet)
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@Flekkie If he verbally says that he declares martial law, but he does not have the power to (due to not being the POTUS or similar at the time he does so), would that resolve this YES?
I realize you linked to Wikipedia for your definition, but I just want to confirm which way you lean.