The American Bar Association this week approved a resolution calling on Congress to ensure that lawyers can provide counsel to state-complaint clients in the marijuana space without fear of federal prosecution.

A report accompanying the resolution noted that a majority of states now legalize marijuana for medical use, recreational use or both. And yet it still remains illegal at the federal level.

"This tension between federal and state laws directly impacts attorneys with clients in or interested in entering state-authorized marijuana business activities," according to the report, submitted by the association's Tort Trial and Insurance Practice Section.