Lawyers are reporting that the Drager Drug Test 5000 is remarkably unreliable.
The Canadian government is ready to crack down on stoned driving.
Carol Whitmire, a medical cannabis patient in her 50s, worked at Walmart for eight years before her manager fired her for failing a drug test.
Progressive lawmakers in New York City are pushing to end testing for THC for employees and people on probation.
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Similar proposals have been swiftly condemned in the past as violations of human rights.
The police department in Canada's capital will not be using the newly approved roadside cannabis tests.
Canada's Attorney General approved the device after an independent panel of experts and pilot program found it to be reliable.
Edmond Superintendent Bret Towne says the shift in drug testing policy and the state's passage of a medical marijuana measure aren't related.