International Longshoremen’s Association chief negotiator Harold Daggett said a shut down has the power to cripple the U.S. economy

Dockworkers at major ports from Maine to Texas go on strike, impacting vital trade arteries in the world's largest economy Dockworkers on the US East and Gulf coasts went on strike after failing to reach a new contract deal with port owners - a major industrial action that threatens to disrupt shipping and cost the US economy billions of dollars

JPMorgan estimates the economic loss from the shutdown of every major container port from Houston to Miami and New York-New Jersey will be between $3.8 billion and $4.5 billion per day.