Do people think President couldn't use the military if one of these "patriot" groups attacked?

[Xithras]

25. The argument isn't about suppressing an active insurrection.

We've used drones to kill people sitting in their houses, walking down a sidewalk, and driving down the highway in their cars overseas. The government has justified it by claiming that the deceased are active terrorists who can't be arrested.

So, the question is simple: If the U.S. government had strong evidence that a particular citizen (let's say, the head of a "patriot" group) was planning an attack on a U.S. target, and the government has been unable to find and arrest them but gets confirmation that they are sitting in their car in a parking lot somewhere, does the government have the right to drone strike them on U.S. soil? We do this EVERY DAY overseas.

There's no serious question that the President has the right to quell domestic insurrection. But does he have the authority to order the execution of a citizen who is merely planning an insurrection? Or who is part of a group that is rebelling, but isn't actively fighting? Where is the line?

No President in history has ever claimed that power.