PORTLAND, Ore. (AP) — The black market for marijuana is thriving in Oregon and an oversupply of weed from growers is flowing to more than two dozen states where pot remains illegal, a top federal law enforcement official said Friday. U.S. Attorney Billy Williams said the state has a "significant overproduction" problem and that he would prioritize enforcement of overproduction, interstate trafficking, organized crime and cases involving underage marijuana use and environmental damage from illicit pot farms. The comments, which echoed those he made earlier this year, were included in a memo that outlines his plans for enforcing federal drug laws in a state with legalized marijuana.