Article Photos: Synthetic pot cases hard to prosecute, lawyer says 3/3

FILE - This  Feb. 15, 2010, file photo shows a package of K2 , a concoction of dried herbs sprayed with chemicals. Cracking down on fake pot, the government moved Wednesday to outlaw five chemicals used in herbal blends to make the synthetic marijuana sold in head shops and on the Internet to a growing number of teens and young adults. (AP Photo/Kelley McCall, File) ORG XMIT: WX103