The branch of government that makes the laws is the Legislative Branch. In the United States, this branch is known as Congress, which consists of two parts: the Senate and the House of Representatives. Congress has the sole authority to enact legislation, meaning it is the only part of the government that can create new laws or change existing ones. The Legislative Branch is established by Article I of the U.S. Constitution and holds significant powers including making laws, declaring war, and controlling government spending.