I know it may seem like it, but the entire US is not completely at the whims of Trump. His orders require all sorts of buy-in. He needs to keep generals, police commissioners, mayors, senators, judges etc. at least somewhat aligned with him, at least enough not to actively push back against him.

I know it seems painful and difficult to believe, but the ruling class (billionaires, oil tycoons, aerospace companies, etc.) in the United States are firmly in favor of the US invasion of Venezuela. Trump would not be allowed to remain in power if he acted against the interests of the ruling class.

The United States is not a democracy. It has a year-round circus in the forms of elections, and keeps bread affordable enough, for now.