The US government moved to categorize marijuana as a less dangerous drug on Thursday, meaning people who use or possess the substance are unlikely to go to prison in future. “Too many lives have been upended because of our failed approach to marijuana,” US President Joe Biden wrote on social media platform X. “So today, the Justice Dept is taking the next step to reclassify marijuana from a Schedule I to a Schedule III drug under federal law.” Drugs fall into five different categories in the United States. Up until now, marijuana or cannabis has been in the first and therefore strictest catego…