【答案解析】The legislative branch of the us federal government consists of two houses. The Senate has 100 members (two for each state) and the House of Representatives has 435 members. Each member represents his or her congressional district. According to the Supreme Court"s regulations, population of congressional districts should be almost equal. A member of the House of Representatives, who should be more than 25 years old and a local resident and own the American citizenship for at least 7 years, is for general election for every two years. A senator, who should be more than 30 years old and a local resident and own the American citizenship for at least 9 years, is also elected.