Cannabis news roundup: Ohio-Michigan cannabis border dispute, fake news and more

IRS trawling state-run pot database to block marijuana companies from claiming tax deductions

How one California city closed all its medical marijuana dispensaries

Following the example of voters, legislatures are trying to legalize marijuana — with mixed results

Not-so-high anxiety: States move fast to protect pot industry

Vermont governor vetoes marijuana legalization, but signals possible compromise

Editorial: California should not become marijuana ‘sanctuary state’

Is marijuana ‘giveaway’ with purchased goods legal?

Canada tests lower age for marijuana legalization

For local governments, cashing in on cannabis isn’t going to be easy