Clerical workers picket in the rain at entrance to Pier 400 at the Port of Los Angeles Thursday, Nov. 29, 2012.  Cargo ships were stacking up at the ports of Los Angeles and Long Beach as a strike by about about 70 clerical workers shut down most of the terminals that together are the nation's busiest port complex.  Dockworkers were refusing to cross the picket lines even though an arbitrator ruled the walkout invalid on Tuesday.  By Thursday morning, at least 18 ships docked and inside the adjacent harbors were not being serviced, port spokesmen said. (AP Photo/Nick Ut)
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