Will the Biden administration overhaul US cannabis policy?
Mr Biden also urged governors to do likewise on state offences and called for a review on whether cannabis should be listed as a less serious drug.
Federal law currently classifies cannabis as a Schedule I controlled substance, meaning it has "no currently accepted medical use and a high potential for abuse".
As one White House official noted, that's "the same schedule as for heroin and LSD, and it's even higher than the classification for fentanyl and methamphetamine - the drugs that are driving [America's] overdose epidemic".
"It makes no sense," Mr Biden said on Thursday, as he directed his attorney general and health secretary to oversee a review.
"Too many lives have been upended because of our failed approach to marijuana. It's time tha...