NEW : Crowley previously said Obama had offended police in Cambridge and elsewhere . Gates eager for incident to be `` teaching moment '' to improve racial relations . The White House has been trying to get the FBI and Justice Department to open an investigation into whether a top aide to President Barack Obama improperly disclosed classified information about U.S. drone strikes in Pakistan. Attorney says professor has no immediate plans to sue Cambridge police . Union asked Obama to apologize to `` all law enforcement personnel '' offended .
NEW : Gates eager for incident to be `` teaching moment '' to improve racial relations . The White House has been trying to get the FBI and Justice Department to open an investigation into whether a top aide to President Barack Obama improperly disclosed classified information about U.S. drone strikes in Pakistan. Attorney says professor has no immediate plans to sue Cambridge police . Union asked Obama to apologize to `` all law enforcement personnel '' offended .