When marijuana is legal in Canada, Americans are expected to flock. But the boundary, and US law, stands in the way.

By Katie Zezima and Lornet Turnbull

BLAINE, Wash. – Recreational marijuana has been legal here in Washington state since 2014. Adults just a few miles away in Canada also will be able to legally buy and smoke marijuana for pleasure starting in October.

But between them stands the U.S. boundary, a thin marijuana militarized zone, in which the drug will remain forbidden by federal law.

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