President : Gates eager for incident to be ` ` teaching moment '' to improve racial relations . President says he hopes incident provides ` ` a teachable moment '' President says professor has no immediate plans to sue Cambridge University . Union asked President to apologize to ` ` all law enforcement ' '' offended .
NEW : Gates eager for incident to be `` teaching moment '' to improve racial relations . President says he hopes incident provides `` a teachable moment '' Attorney says professor has no immediate plans to sue Cambridge police . Union asked Obama to apologize to `` all law enforcement personnel '' offended .