Some conservatives favor legalization or decriminilization?

Of marijuana only, but it's still amazing. Note that he still wants to chase cocaine and heroin. Legal heroin wouldn't fly in this country at this point in time, so I still have to consider this to be progress.

The decades of prohibition on marijuana have done little to stem its popularity and abuse. In terms of intoxication, it has no worse effects than alcohol, and some argue considerably less impairment.

snip

We know that what we’ve been doing hasn’t worked. Is it time to acknowledge a new paradigm on marijuana? Perhaps[.]

He's probably correct about the constitutional interpretation of Frank's bill. Still, the feds have ignored the Constitution on drugs for decades, so why start now?

Also notice the number of commenters that agree. That's a pretty conservative readership over there, so that's a big deal.