a chicken runs and kills you
A law when it is first proposed is a bill. When it passes both houses of the legislature and signed by the chief executive (governor or president) it then becomes a law.
Normally, state laws are signed by the Governor, and federal laws are signed by the President. If the president does not sign, the bill will still become law in 10 days unless Congress goes out of session before the president has had the bill for 10 days.
If a bill has been signed and approved by both houses, it goes to the president. The president then can veto (reject) it or sign it (then it becomes a law). If the president vetos the bill, then Congress can override the veto with a 2/3rds vote majority passing the bill in both houses. If this occurs, the bill becomes a law.
statute
Bill Clinton
Lyndon Johnson signed the first Medicare bill.
President Grover
It gets sent to the president of the United States.
When it is signed by the president
If the Congress is still in session, the bill becomes a law after 10 days even if the President has not signed it or vetoed it. If the President vetoed the bill, Congress has to override the veto in order for it to become a law. If the President has not signed the bill within 10 days and the Congress is not in session, it does not become a law. This is called a "pocket veto."
If you mean the Federal Tort Claims Act, it was signed by President Truman.
If the president does not agree with a bill he/she can return it.