ar, approves treaties, has the power of the purse, and has the power of impeachment,(弹劾) by which it can remove sitting members of the government.РРThe House of Representatives has 435 members, each representing a congressional district for a two-year term. House seats are apportioned (分配)among the states by population every tenth year. ?The Senate has 100 members with each state having two senators, elected at-large to six-year terms; one third of Senate seats are up for election every other year.РРРJudicial(司法)Рthe United States Supreme Court building(最高法院)РРThe Supreme Court, led by the Chief Justice of the United States, has nine members who serve for life.РJohn G. Roberts? 17th Chief Justice of the United StatesРРРExecutive(行政)Рthe White House?home and workplace of the U.S. president