The U.S. Congress, comprised of the House of Representatives and the Senate, passes bills into law. The President recommends or vetoes laws, and the Supreme Court interprets laws.
Added: The question also applies to State Legislatures who do the same thing at the state level.
Both the Senate and the House
us senate
The U.S. Congress passes bills that become Federal Laws when the U.S. President signs them (although there are cases in which Congress can make a bill into a law without the President's approval), and each state Congress passes bills that become state laws when the Governor of the state signs them.
The legislative branch comes up with bills(ideas that they hope to become laws) The executive branch approves the bills and the Judicial branch decides if they are constitutional.
The Answer To This Answer Is "Laws"
For Australia it is the Governor General. Her name is Quentin Bryce.
Laws
Who passes bills to let your mother shake her saggy bags all over my block?
Comgress
batty
They die in committee
Once a bill passes both the Senate and House of Representatives, it is sent to the President for his approval. If he veto it, then that bill has to be passed by 2/3 majority of the congress, then it become law without presidential consent.