In this file photo taken Jan. 13, 2015, marijuana plants sit under powerful lamps in a growing facility in Arlington, Wash. Washington launched its second-in-the-nation legal marijuana market with just a handful of stores selling high-priced pot to long lines of customers. A year later, the state has about 160 shops open, tax revenues have soared past expectations and sales top $1.4 million per day.
In this file photo taken Jan. 13, 2015, marijuana plants sit under powerful lamps in a growing facility in Arlington, Wash. Washington launched its second-in-the-nation legal marijuana market with just a handful of stores selling high-priced pot to long lines of customers. A year later, the state has about 160 shops open, tax revenues have soared past expectations and sales top $1.4 million per day. Elaine Thompson The Associated Press
In this file photo taken Jan. 13, 2015, marijuana plants sit under powerful lamps in a growing facility in Arlington, Wash. Washington launched its second-in-the-nation legal marijuana market with just a handful of stores selling high-priced pot to long lines of customers. A year later, the state has about 160 shops open, tax revenues have soared past expectations and sales top $1.4 million per day. Elaine Thompson The Associated Press

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