The White House says it wants federal drug officials to consider lifting long-standing restrictions on cannabis. The legal marijuana industry says it’s being held back by regulations that curtail their business but others say lifting those restrictions could increase impaired driving.

“There are a lot of folks working on it so is there a simple blood test like with alcohol? No. But I think that science is really working on it and will catch up,” said cannabis legal expert Laura Bianchi.

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