Terminals should be blamed for labor shortages on West Coast, union officials say.
Ocean carriers get blamed for foisting big ships on ports, but say inadequate compensation prevents investment in better service.
Workers will try to clear backlog from terminals.
Port of Long Beach CEO said ports are in a "perfect position" to play this role.
Flexi-Van executive says "misplaced" chassis have aggravated congestion.
ICTSI Oregon says actions against it are "far beyond what other West Coast ports are experiencing."