And, even if they were, there are some real ethical, legal, and practical concerns regarding the use of military as an internal policing force within a country. There are lines that governments should not cross; this is one of them. From a human rights perspective this opens a can of worms. From the perspective of someone who lives in a democratic republic, this erodes a lot of the checks and balances that are integral to a functioning republic - on a national, state, and local level. Trump's actions are undermining not only other government officials at all three levels, and of all three branches of government, but also the country's ideals.
I am deeply concerned about all of that. What keeps me up at night, however, is this: At some point, a proster, or group of protesters, will respond with force against either ICE or the military. I'm not convinced that either group is trained in how to respond to that, or to peaceful protest that includes passive resistance. I do not condone violent protest, but I do recognize that it is, sometimes, the reality. I will, however, actively support passive resistance, and may find the need to do it at some point in the near future.
What happens when people fight back, or refuse to move?
How much are you willing to sacrifice in the name of feeling incrementally safer?