Does the president need to sign legislation before it becomes law?

Yes, in the United States, the president must sign legislation for it to become law. After Congress passes a bill, it is sent to the president, who can either sign it into law or veto it. If the president vetoes the bill, Congress can still enact it by overriding the veto with a two-thirds majority in both chambers. Alternatively, if the president takes no action for ten days while Congress is in session, the bill automatically becomes law.