Every Bill which shall have passed the House of Representatives and the Senate, shall, before it becomes a Law, be presented to the President of the United States; if he approves he shall sign it, but if not he shall return it, with his Objections to that House in which it shall have originated, who shall...proceed to reconsider it. If after such Reconsideration two thirds of that House shall agree to pass the bill, it shall be sent...to the other House, by which it shall likewise be reconsidered, and if approved by two thirds of that House, it shall become a Law.