The  Senate is composed of 104 Members called Senators,  who  are appointed  by the Governor General upon the recommendation  of  the Prime Minister. Even though the Senate is not an elected body, it reviews  legislation  passed by the  House  of  Commons  and  can introduce  its own bills. Like the House of Commons,  the  Senate has  committees to help it review legislation. Senate  committees examine  many important social and economic issues. Senators  who were  appointed  to the Senate before 1965 hold  their  jobs  for life.  But those appointed after 1965 must retire when they reach the  age  of 75. Senators are appointed on a regional  basis  and must live in the province or territory they represent.