You have an overly expansive view of presidential powers. The Congress does not answer to the president. It is an independent institution. It does not convene

You have an overly expansive view of presidential powers. The Congress does not answer to the president. It is an independent institution. It does not convene and dissolve by presidential request. Executive orders can be over-ruled by either of the other two branches of government Veto power can be over-ruled by the congress. Until recently, presidents needed congressional approval to make war. Now we skip that part and just don't call it a war.