Each state has two senators. Each congressional district is to be as equal in population to all other congressional districts in the State as practicable, based on the decennial census counts.
The Senate gives every state equal represenation and the house is weighted by population. For a law to be passed it has to be approved from both perspectives.
Money legislation originates in the House and the Senate confirms White House appointments.
Answered Nov 03, 2010
Edited Nov 03, 2010