Who signs bills to become laws?

The President has the authority to sign bills into law. This action is a critical part of the legislative process in the federal government of the United States. Once Congress has passed a bill, it is sent to the President, who can then choose to sign it, thereby making it law. Signing a bill indicates the President's approval of the legislation. If the President does not sign the bill, it can still become law if Congress is in session and he does not take action after 10 days, or it can be rejected through a veto.

The other choices do not possess this signing authority as part of their roles. The Speaker of the House facilitates legislative proceedings and represents the majority party within the House, but does not sign bills into law. The Vice President's role primarily involves being the President of the Senate and can cast tie-breaking votes, but they do not sign bills. The Senate Majority Leader is responsible for managing the legislative agenda in the Senate but does not hold the power to sign legislation into law. Thus, the President remains the key figure in the final step of the legislative process to officially enact laws.