Police in Oregon can no longer arrest someone for possession of small amounts of heroin, methamphetamine, LSD, oxycodone and other hard drugs as a ballot measure that decriminalized them took effect on Monday. Instead, those found in possession would face a $100 fine or a health assessment that could lead to addiction counseling. Backers of the ballot measure decriminalizing hard drugs, which Oregon voters passed by a wide margin in November, hailed it as a revolutionary move for the United States.