Senator Booker said he wants to correct an "unjust system" that largely impacts communities "of color."
The Super Bowl XXXIII champion Marvin Washington is one of five plaintiffs suing the attorney general over marijuana legislation.
Sessions wants to undo the amendment that prevents the Justice Department from spending money to prosecute those in line with state medical marijuana laws.
Briefing reporters on agency's new national drug report, the Acting Administrator of the Drug Enforcement Administration Chuck Rosenberg called marijuana "bad" and "dangerous."
The vote does not legalize marijuana consumption, but more rulings of the same kind could set a legal precedent.
Even libertarian Rand Paul has declined to take a position on legalization.
The Kettle Falls Five case shows the contradictions between state and federal guidelines on pot.
Colorado is home to gun-huggers and pot smokers, pro-lifers and atheists—but running for the middle ground.
Those selling marijuana legally find they are facing prohibition by the back door.
Times are changing in the city many associate with drug tourism.
"I don't see how (the new laws) can be compatible with existing conventions," the executive director of the United Nations Office on Drugs and Crime (UNODC), told reporters.