The word amendment means correcting or modifying the original laws drafted in the US Constitution. Thousands of amendments are deliberated in the Senate.
The first method is when a recommended amendment is given the final consent only after two third of the House of Representatives and Senate approve in favor of the proposed amendment.
Next, the proposed amendment is directed to the states where two third of the states’ approval is sought.
The second method is forming a convention by the legislatures of the states in which two third of the states’ legislature is required to amend the laws.