Scientists welcome new rules on marijuana, but research will still face obstacles

For decades, researchers in the U.S. had to use only marijuana grown at a facility located in Oxford, Mississippi. A few other approved growers have been added in recent years. (Brad Horrigan/Hartford Courant/Tribune News Service via Getty Images)
As the Biden administration moves to reclassify marijuana as a less dangerous drug, scientists say the change will lift some of the restrictions on studying the drug.
But the change won’t lift all restrictions, they say, neither will it decrease