What is the role of the senater?

The role of the Senate is to pass worthy bills and void or nullify bills that is against the Constitution. The legislation they pass or void is from the House of Representatives, and vice versa. They both need to agree for it to be passed on to the President, who can pass it, and make it into legislation, or veto it. After that, it goes to the Supreme Court. For more information on the role of the House of Representatives, the Supreme Court, and also how bills are passed, look at the Related Questions below.