It is a Congressional power!
“It is a Congressional power!”
Yes, but the Congress does not work in a vacuum. And they must do things BY LAW.
The Congress can “provide for a militia,” they can create a militia, and they can create an army, but only by law.
The Congress has absolutely no authority to send troops or people of any type on it’s own. That function is vested in the Executive, as it should be.
During the Cleveland Administration, the Congress was going to declare war on Spain. Cleveland said, go ahead, but I won’t send the Army or Navy.
Yes, the Congress has power but it only has the power to make law on its own if it has the numbers to override the executive, and even then, the president cannot be compelled to act.