Checks and Balances
Why are there three distinct branches of government, each with a different function? The framers of the Constitution did not wish to return to the totalitarian system of governance imposed on colonial America by the British.
To ensure that no single person or entity had a monopoly on power, they instituted a system of checks and balances. The president's power is checked by the Congress, which can refuse to confirm his appointees, for example, and has the power to impeach, or remove, a president. Congress may pass laws, but the president has the power to veto them (Congress, in turn, may override a veto). In addition, the Supreme Court can rule on the constitutionality of a law, but Congress, with approval from two-thirds of the states, may amend the Constitution.
Educate yourselves with the role of the House, Senate, and the President and the Oath they all take. Get off your stupid and stop supporting a specific party and start supporting America!