In a new interview with Rolling Stone magazine, outgoing President Barack Obama makes his most explicit comments about marijuana decriminalization to date.

In a new interview with Rolling Stone magazine, outgoing President Barack Obama makes his most explicit comments about marijuana decriminalization to date.

The Obama administration is planning to remove a major roadblock to marijuana research, officials said Wednesday, potentially spurring broad scientific study of a drug that is being used to treat dozens of diseases in states across the nation despite little rigorous evidence of its effectiveness.

The Obama administration is planning to remove a major roadblock to marijuana research, officials said Wednesday, potentially spurring broad scientific study of a drug that is being used to treat dozens of diseases in states across the nation despite little rigorous evidence of its effectiveness.

President Obama has a rare opportunity to make history by rescheduling marijuana.

President Obama has a rare opportunity to make history by rescheduling marijuana.

The President of the United States made a weed joke at the annual White House Correspondents' Dinner on Saturday.

The President of the United States made a weed joke at the annual White House Correspondents' Dinner on Saturday.

An Obama administration official will meet with a representative of DCMJ, a D.C.-based marijuana advocacy organization.

Marijuana advocates hoping for a substantial shift in federal marijuana policy in the last year of the Obama administration are likely to be disappointed.

Marijuana advocates hoping for a substantial shift in federal marijuana policy in the last year of the Obama administration are likely to be disappointed.