Why do you feel it is important that both house of representatives and senate agree to a bill before it is sent to the president?

Because the House of Representatives and the U.S Senate still believe the bill should become a law, they can hold another vote on the bill. If two-thirds of the Representatives and Senators support the bill, the President’s veto is overriden and the bill becomes a law.

impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress