Sources close to Governor Arnold Schwarzenegger tell KXJZ News that he will endorse Senator John McCain’s bid for the presidency.  Schwarzenegger’s announcement is expected to come Thursday at an event in Los Angeles.  McCain and Schwarzenegger have worked together before…   The Arizona Senator campaigned for the Governor’s initiatives in 2005—which were not successful at the ballot.  Thursday's event in L-A has been billed as one where the two will also talk about the environment—an issue sources say the two have in common.