Visiting Tijuana at this time is not advisable; unless your list of favorite destinations includes Bogota, Cali, Lagos, and you get a thrill from being in dangerous places. Their police chief was murdered in broad daylight this April; a few days later some federales were found murdered in a ditch. TJ is ground zero in the narco-war right now. You're chances of getting caught up in anything are very remote, but at least be aware. Southern Baja Cal is still nice.