How can SCOTUS allow the feds to regulate non-interstate marijuana?

I think Rehnquist would agree with you. In *Lopez * he tried to import a commercial requirement into the test:

Which implies that the commerce clause automatically allows regulation of commercial activity.

Which suggests that not all commercial transactions may be regulated because they must also substantially affect interstate commerce. But it appears to be a requirement.

Here, again, it appears they must both be present.

While we are in here, he also says some interesting things about certainty and the Commerce Clause:

He is saying that you can’t really get the answer by looking at the legal standards or the text. Isn’t he?

Looks like he saying the interpretation of the text is uncertain.

Yep.

Now in Morrison Rehnquist again wrote the opinion. And he picked up where he left off in Lopez:

Hey, look what I found. And right where I left it.

The dissent picked right up on it:

Hey, Rehnquist is planting quotes and trying to do what Brennan did in Burger King!

While we could read the commerce power as lnot including “noncommercial” activities, that does not give effect to the necessary and proper clause.

We have tried to balance plenary power and categorical exclusions for a long time.

We tried this approach.

So coming into the pot case we have Rehnquist reviving the commercial/non-commercial distinction. That distinction would have supported reversal in the pot case. But Rehnquist could not convince a majority of the Court to vote with him.

The majority quickly discarded the commercial/non-commercial distinction, re-establishing Wickard:

Here is an article noticing that Rehnquist is losing more on Federalism cases, including this one.

I agree. It is possible for them to distinguish the case, or overrule it completely. See, http://www.michbar.org/journal/article.cfm?articleID=475&volumeID=35.

In fact, as I see it, they just did that to Lopez and Morrison.

Amazingly, Bricker, we have reached a point of constitutional law upon which we disagree. I think Wickard is logically unassailable, even as it seems to defy intuitive common sense.

Prior to the New Deal, the court struggled for a long time trying to distinguish between interstate and intrastate activity. That turned out to be harder than it sounds, and the pre-New Deal tests were essentially unprincipled, ad hoc and arbitrary. Although we can all agree that Farmer Filburn’s wheat commonsensically isn’t interstate commerce, it’s hard to devise a test that excludes him while incorporating those things we commonsensically understand as being interstate in nature.

The blame for this loophole has to be laid at the feet of the founders (although to be fair, their era didn’t have quite the cross-border economics ours does). The power to regulate interstate commerce is effectively the power to regulate anything. The only real limit is an intuitive one, and intuitive tests are spectacularly bad for judicial use.

Which is why my solution is for the courts to get out of the commerce clause business entirely. Rather than give such Congressional acts the patina of judicial approval, simply say commerce clause disputes involve a nonjusticiable political question – if Congress claims an act is within the commerce power, it is.

Judicial silence would require lawmakers to themselves explain to their constitutents why their acts involve interstate commerce, rather than simply saying “the courts say so.” The judiciary could stop handing down logically sound but intuitively wrong decisions like Wickard, preserving their own integrity in the public eye. And the results would be no different. Everyone wins.

I also note in passing that it is a mistake to lump the commerce clause cases in with cases of the substantive due process sort. There is a commerce clause, and there is a necceary and proper clause, and they demand to be interpreted. Even if you disagree with this particular result, the court in this decision was not engaged in activism. Indeed, the court was reconciling two conflicting laws each reached by separate democratic consensus, and not crafting its own substantive law out of whole cloth.

Well, then, the honest way to support them is to advocate an amendment to the Constitution that would give Congress the power to enact them without torturing the syntax of the Commerce Clause until it confesses.

It’s weird.

Early in the 20th Century, you have a powerful temperance movement clammering for a ban on alcohol use. Eveyone understands that the Federal govt does not have the power to prohibit alcohol use. If they want to prohibit alcohol use, the only way to do so is to ammend the constitution. So they amend the constitution. They don’t try to wiggle out of the necesity, they just buckle down and get it done.

Prohibition is a complete and utter failure. Result: the amendment is repealed. Time taken to perceive and act on the failure: not much more than a decade.

Just a little later in the century, govt officials decide that they want to prohibit the use of marijuana, and a bit later, various other recreational substances. (I don’t think there was any great public outcry demanding this; not sure why the pols percieved a need for this action.) But this time, they don’t get to work on passing a constitutional amendment. Either they’ve gotten mass amnesia about what the Fed govt can and can’t do, or they’ve stopped carring about the rule of law. Somehow, inconvenient aspects of the Constitution and Bill of Rights are now seen as just something to be gotten around. So, marijuana and various other substances are outlawed without ammending the constitution.

This new Prohibition fails just as completely as alcohol Prohibtion did. (Should anyone have been surprised?) Result: nothing. Eighty years later, we still have this failed, futile “war on drugs” hanging around our necks like a dead albatross.

Not only are the actually dangerous drugs still outlawed, but so is nearly harmless marijuana. Our criminal justice system is massivly overburdened and lives are being needlessly ruined, all in an effort to stamp out use of a recreational substance plainly less harmful than the alcohol that we re-legalized back in the early '30s.

Our great-grandparents a century or so ago seem to have been smarter, more realistic, and more honest than Americans of more recent generations.