Shipping containers are seen as port operations are halted during a strike at the Port of Los Angeles Tuesday, December 4,  2012. Los Angeles Mayor Antonio Villaraigosa says both sides in a strike at the twin ports of Los Angeles and Long Beach have agreed to federal mediation. However, the union representing clerical workers says the strike now in its eighth day will continue. Clerical workers are striking 10 terminals at the nation's busiest port complex and dockworkers won't cross picket lines.  (AP Photo/Nick Ut)
{}