I'm oversimplifying, but when it comes to the budget I'm pretty accurate: the president can't just decide they won't spend the money because they don't like where it's going or who it's going to. They certainly can't extort the lawful recipients of the money.

I'm not 100% sure about your usage of the word "can't" since it's been actively happening. Maybe "shouldn't" might apply better to the reality of the world we now find ourselves living in.