The legalization of cannabis in California has done almost nothing to halt illegal marijuana growing by Mexican drug cartels, which are laying bare large swaths of national forest in California, poisoning wildlife, and siphoning precious water out of creeks and rivers, U.S. Attorney McGregor Scott said Tuesday. The situation is so dire that federal, state and local law enforcement officials are using $2.5 million from the Trump administration this year to crack down on illegal growers, who Scott said have been brazenly setting booby traps, confronting hikers and attacking federal drug-sniffing dogs with knives.