Gov. Bob McDonnell (R) said Tuesday that he is frustrated that the federal government has not responded to his request from more than a year ago that state troopers act as immigration and customs agents. McDonnell sent a letter to U.S. Secretary of Homeland Security Janet Napolitano in August 2010 asking for the authority after spending months trying to reach an agreement with the federal government to train and deputize troopers to make legal status checks and refer individuals for deportation.