How high is too high?

Police say they’re hamstrung in testing drivers for marijuana

WHEN PROHIBITION ENDED IN 1933, law enforcement officials found themselves in an awkward position. They knew driving drunk was a problem, but they didn’t know how to police it. How do you measure drunkenness? In 1931, an Indiana University professor invented the Drunkometer, in which a person would blow into a balloon and then that(...)

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