Ken, you can try to turn this into a Constitutional argument if you like, but it is not unusual for the federal government to codify certain laws so that uniformity well exist across state borders.
If one state legalizes drugs, it an effective legalization for anyone in nearby states. It presents a real problem for states that don’t want to legalize.
This isn’t limited to drugs.
You just endorsed the expansive Commerce Clause at the expense of the Tenth Amendment. That's how we got fedgov control of health care, the environment, education etc.
Typical prohibitionist contempt for the Constitution.
“it is not unusual for the federal government...”
So your argument is that, if it’s not unusual for the federal government to violate the Constitution, then it is perfectly okay?
“If one state legalizes drugs, it an effective legalization for anyone in nearby states.”
That would mean that counties which allow alcohol are effectively legalizing it for anyone in the dry counties? So, the solution to that would be what, Federal prohibition so that the dry counties have no issues to deal with? Do you even try to conceive of the holes in your arguments before you post them?