What is the legislature branch?

The Legislative Branch of the United States consists of the Senate and the House of Representatives, which together form the United States Congress. As a whole, Congress writes and passes laws, has the right to declare war, confirm or reject many Presidential appointments, and possesses substantial investigative powers. The House and the Senate also have exclusive powers granted to each. For the House, this would include impeaching federal officials, electing the President in the case of a tie in the electoral college and initiating revenue (spending and taxation) bills. Some of the Senate's exclusive powers include trying impeachment cases referred to it by the House, ratifying treaties and confirming presidential appointments that require consent.