A Mexican man in the United States has pleaded guilty to impersonating a Border Patrol agent and following federal immigration officers to divert them while they were out on immigration enforcement missions in Southern California . Jamie Ernesto Alvarez-Gonzalez admitted to following a Border Patrol agent on Jan. 8 while he was driving in a neighborhood in San Diego , according to the U.S. Attorney's Office for the Southern District of California. Prosecutors said Alvarez-Gonzalez’s black Ford F-150, a model also used by undercover federal officers, had a license plate with federal truck written on the frame in small letters, though the word federal was misspelled. He put a Border Patrol sticker in the windshield and non-working radio communications antennae on the roof, according to the complaint. Handcuffs were hung from the rearview mirror. The agent aborted his mission when he saw Alvarez-Gonzalez following him, falsely believing other agents were responding, according to the U.S. Attorney's Office.…