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PMA said ships will not load or unload cargo Thursday, Saturday, Sunday or Monday due to continuing ILWU slowdowns.
Justice Department said sentence is first against an executive in its roll-on/roll-off shipping investigation.
Move comes as ILWU, PMA talks enter 10th month.
On-time performance is being hampered by congestion at West Coast ports.
DHS funding crisis means the agency will have to focus resources on border security, cargo clearance
The revised agreement would allow collaboration on congestion, transportation infrastructure needs and pollution mitigation.