I'm Michelle Goldberg.

I'm Ross Douthet.

I'm David Leonhardt.

And this is the argument.

This week, have we been duped by the marijuana lobby?

Michelle debates with author Alex Berenzen

about his upcoming book on the dangers of marijuana.

Now you're sort of dismissive of the idea

that pot could be regulated.

Then the three of us argue about whether it's time

to finally legalize it once and for all.

The kind of drugs you legalize

shape the kind of society you have.

And finally, of course, a recommendation.

The Christmas season is moving in the wrong direction.

For a long time, marijuana was considered a dangerous drug.

Marijuana, the burning weed when it's roots in hell.

But perspectives are changing,

and the movement to legalize it has picked up momentum.

Today, more than half 29 of the 50 states

already sell marijuana for medical use.

Two-thirds of American support legalizing cannabis.

...