"This conflict is only going to continue to grow over the next few years, and we must provide certainty to the millions of individuals and businesses that remain caught in a web of incompatible laws," he said. "A national commission would provide us with the information we need to create sensible policy going forward."

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The new commission would study how federal laws should be reconciled with state laws, the cost of the federal prohibition on marijuana, and how the federal government should place marijuana in the schedule of the Controlled Substances Act.

It would also examine the health impacts of marijuana, and racial disparities and other consequences related to marijuana possession.

Cohen noted that a national commission on marijuana use was set up in 1971, and it released a report in 1973 that called for the decriminalization of the drug.

"In the four decades since the Shafer Commission, however, the federal government has only expanded its War on Drugs and continued to prohibit the use marijuana," a statement from Cohen's office said.

Cohen's bill is cosponsored by Reps. Earl BlumenauerEarl BlumenauerLobbying world Hillicon Valley: Progressives oppose funding bill over surveillance authority | Senators call for 5G security coordinator | Facebook gets questions over location tracking | Louisiana hit by ransomware attack Progressives oppose spending stopgap measure over surveillance authority extension MORE (D-Ore.), Sam FarrSamuel (Sam) Sharon FarrMedical marijuana supporters hopeful about government funding bill Marijuana advocates to give away free joints on Capitol Hill DEA decision against reclassifying marijuana ignores public opinion MORE (D-Calif.), Jim MoranJames (Jim) Patrick MoranLawmakers toast Greta Van Susteren's new show Star-studded cast to perform play based on Mueller report DC theatre to host 11-hour reading of the Mueller report MORE (D-Va.), and Jared Polis (D-Colo.).