[familyop]

"If Congress knew in 1917 that the Constitution would have to be amended to grant them authority to pass Federal legislation to regulate or ban alcohol - what changed between 1917 and 1970 to give Congress the authority to regulate or ban marijuana?

I contend that Congress has no such authority."

The two situations were different with respect to the Constitution.

Anyone interested in learning can look at all of the historical and legal information leading up to and pertaining to the Uniform State Narcotic Drug Act (also see the Hague Convention—very important) and the Comprehensive Drug Abuse Prevention and Control Act of 1970. There were events that led to those laws and cases that resulted from them.

[Ken H]

In your personal opinion (not case law), does the Constitution authorize fedgov to sign away States’ 10th Amendment powers via a treaty or international agreement?

If so, which section?