LOS ANGELES (Reuters) – Wildfire investigators in California are looking for marijuana growers tied to a Mexican drug cartel whom they suspect ignited a blaze that has charred more than 87,000 acres of a national forest. The La Brea Fire, which erupted August 8 in the Los Padres National Forest in the remote Santa Barbara County mountains northwest of Los Angeles, is believed to be the first major wildfire in the state caused by drug traffickers, U.S. Forest Service spokesman Jim Turner said on Monday. A joint statement issued Saturday night by the Santa Barbara County sheriff's office and the...