Coleman—An Advisory Opinion
“The [amendatory] process itself is ‘political’ in its entirety, from submission until an amendment becomes part of the Constitution, and is not subject to judicial guidance, control or interference at any point. Since Congress has sole and complete control over the amending process, subject to no judicial review, the views of any court upon this process cannot be binding upon Congress...
Congress, possessing exclusive power over the amending process, cannot be bound by and is under no duty to accept the pronouncements upon that exclusive power by this Court. . . . Neither State nor Federal courts can review that power. Therefore, any judicial expression amounting to more than mere acknowledgment of exclusive Congressional power over the political process of amendment is a mere admonition to the Congress in the nature of an advisory opinion, given wholly without constitutional authority.”
Source: Coleman v. Miller, 307 U.S. 433 (1939)