Is the repeal of Prohibition legal?

[$ecular#eckler]

Is there a legislative mechanism for repealing the amendment?

Yes, the legislature is inclined, as they did, to write the amendment and send it to the states for ratification.

The judicial branch might be able to reason its "unconstitutionality," but that did not happen. You can put together a fully developed critique and hire a lawyer to put it into a lawsuit against the government for making such a mistake that has clearly misguided the American culture leading to this fucked-up society that we endure.

Article 5 talks about making amendments, but does not say anything about repealing existing laws. If an amendment directly contradicts another amendment (de facto repeals it), then is it legal?

Yes, because the amendment process includes several electoral levels that get it close to a full democratic referendum (state legislatures) like a presidential election. The states may conduct a state-wide referendum election on the proposed amendment.

The 18 Amendment was repealed by the 21 Amendment.

This case is without precedent.

The bigger problem is why did the system go through such a drastic correction, and was it a correction?