Is this the guy who was the former member of MECHA, or is that somebody else?
Yes, but you may be thinking of Cruz Bustamante (Lt. Gov) or Antonio Villaraigosa (Mayor of Los Angeles) who have been in the press more for their Mecha affiliations.
Villaraigosa and Cedillo have traveled the same path for decades. Both went to Roosevelt High School in Los Angeles and then to UCLA where they became activists, including MECHA. Both attended the People's College of Law (neither passing the bar or becoming a lawyer). Assembly Speaker Fabian Nunez also comes from the same camp.