Should the president be able to ratify or veto the law? is that too much power?

Yes, and no it is not too much power, because it is a long process and the president isn’t the only one involved in the decision.

Explanation:
According to the U.S constitution, article 1, section 7, clause 2. “Every Bill which shall have passed the House of Representatives and the Senate, shall, before it become a Law, be presented to the President of the United States: If he approve 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 enter the Objections at large on their Journal, and proceed to reconsider it. If after such Reconsideration two thirds of that House shall agree to pass the Bill, it shall be sent, together with the Objections, 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.” So as you can see it is a long process and the present her/himself is not alone in the decision.