Germany is on the verge of legalizing cannabis, with an intended start date of April 1.

The Union is challenging the legalization by seeking the mediation committee in the Bundesrat to obstruct the law's passage.

Health Minister Karl Lauterbach and the government's drug commissioner have expressed concerns that the involvement of the mediation committee could derail the legalization effort.

The proposed law by the Ampel coalition allows for controlled possession and cultivation of cannabis for adults, alongside stringent public consumption rules.

There are provisions within the law to revisit and potentially reverse past cannabis-related offenses, prompting worries about increased court caseloads.

The Union's pushback against the cannabis legalization bill threatens to delay its implementation beyond the planned April 1 date.