The issue focused on federal budget legislation that authorized tax breaks for medical marijuana businesses. Lawmakers made clear they wanted to legalize medical marijuana in states where it's legal. But medical marijuana laws aren't permitted under federal law.

While legalization supporters won an earlier Supreme Court ruling legalizing medical marijuana, federal officials said medical marijuana remains illegal and enforcement is based on criminal prosecutions. The Justice Department says medical marijuana laws could open the door to recreational pot use.

Last month, Attorney General Jeff Sessions threatened to sue Colorado