Los Angeles Mayor Antonio Villaraigosa faced criticism Monday for requesting the use of a jet owned by Ameriquest, a mortgage firm that has a City Hall lobbyist assigned to press its interests with the mayor. Villaraigosa, who once worked for the firm, flew last week on the private jet to Detroit with an aide and his security detail after receiving a last-minute invitation to speak at the funeral of civil rights pioneer Rosa Parks. "Because of the short notice and the need to fulfill his official duties, the mayor needed the services of a private jet," spokeswoman Janelle Erickson said....