SAN BERNARDINO (Reuters) - A surge in migrants at the U.S.-Mexico border has pushed immigration detention facilities in California to capacity, forcing U.S. Border Patrol to release many at bus stations in the state for the first time, the agency said on Monday. U.S. Border Patrol in the El Centro area of southern California said it began to drop migrants off at San Bernardinos Greyhound Station on Wednesday after it ran out of room to hold them....