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Draymen say they could be forced out of business by huge demurrage and detention bills.
No contract talks planned with Pacific Maritime Association Thursday.
Longshoremen are planning rallies tomorrow in Los Angeles and Tacoma.
Transpacific carriers cite port congestion and stronger demand as economy improves.
New style port directors are trying to tailor ports to industry supply chain needs.
Senate moves to decouple fight over immigration policy from Homeland Security, but resistance remains in House.