Who is responsible for passing Constitutional Amendments?

Answer 1

Constitutional amendments become part of the Constitution, and as such they are the law of the land. The supreme court interprets the Constitution including the amendments. Amendments are made by the states and by the states alone, in the sense that no matter where they originate (from some governmental initiative or from the states themselves) they become law ONLY when they are accepted by 3/4 of the states and there are no other requirements. No OK from any federal group or individual is needed, and there is no veto power vested in the president or any other group or individual. If the states say it is so, it is so with no further discussion or debate. The point here is that Congress is perfectly free to debate, pass and submit an amendment for state approval, but the states, according to the provisions of the constitution itself, can make and approve an amendment without the permission or approval of Congress. In this case, the only job that Congress has is to determine if the states are to individually pass a proposed amendment by state legislature, or by specially formed state conventions. This method of constitutional amendment has not yet been used.

Answer 2

Congress can propose amendments.