1 They carry out the laws that the Congress makes. The President signs bills and then they become law.
2 The Vice President and members of the Cabinet help the President to make decisions.
3 The Government is divided into 3 branches: legislative (the US Congress), executive (the President and his Administration) and judicial (the US Supreme Court)
4\5 The US Supreme Court, the third or judicial branch of government, consists of nine Justices appointed for life by the President with the approval of the Senate.
6 Yes, the constitution can be changed
7 Changes in the constitution is the correction
8 27 amendments