What are the differences between the Senate and House of representative ?

The United States Congress is the legislature of the United States federal government. It is bicameral, comprising the House of Representatives and the Senate. The House of Representatives has 435 voting members (plus a nonvoting delegate from the District of Columbia and four additional non-voting members from Guam, The US Virgin Islands, America Samoa, and Puerto Rico), each representing a congressional district and serving a two-year term. House seats are apportioned among the states on the basis of population. Each state has two Senators, regardless of population. There are 100 senators, serving staggered six-year terms. Both Senators and Representatives are chosen through direct election.

The United States Constitution vests all legislative powers of the federal government in the Congress. The powers of Congress are limited to those enumerated in the Constitution; all other powers are reserved to the states and the people. Through Acts of Congress, Congress may regulate interstate and foreign commerce, levy taxes, organize the federal courts, maintain the military, declare war, and exercise certain other "necessary and proper" powers.

The House and Senate are coequal houses. However, there are some special powers granted to one chamber only. The Senate's advice and consent is required to confirm presidential nominations to high-level executive and judicial positions, and for the ratification of treaties. Bills for raising revenue must originate in the House of Representatives, as well as any impeachment proceedings.