We have a separation of powers for a reason. This is throwing out the main power entrusted to our Congress. Why would any future administration care about what

We have a separation of powers for a reason. This is throwing out the main power entrusted to our Congress. Why would any future administration care about what Congress has to say after this precedent is set? He also doesn't have a mandate, he won by relatively thin margins just like all of our recent elections. If they want to do this and not destroy our democracy, they just need to pass a bill to make the changes they want.