Environmental For years the United States has had regulations concerning the
handling of ballast water for transcontinental shipping. The goal was to minimize the cross contamination of invasive marine species into virgin waters. Major shipping hubs such as the Port of Long Beach,
Port of New York and New Jersey, and the Port of Houston have already been contaminated for generations. Short Sea shipping will use these ports like spokes of a wheel to smaller, easier to access ports, and there are concerns of 'secondary contamination' to these smaller estuaries.
Trucking companies The
Teamsters Union, as of May 2013 has yet to publish a stance on federal backing of this third contender to many shipping markets, MARAD and maritime shipping leaders believe they are helping the Teamsters by moving freight out of areas with low Teamster-to-Cargo Ratios, and into ports where the ratio is closer to 1:1 or better. They also believe that the Marine Highway can better handle the nation's north-south transit, though there are no east-west sailing corridors and those will always be land-side transits.
Cabotage laws The
Merchant Marine Act of 1920, also known as the Jones Act, prohibits foreign ships from carrying cargo or passengers between U.S. ports, a practice called
cabotage. Ships that wish to trade between U.S. ports must be built and flagged in the U.S. and have at least three-fourths of their crew-members U.S. citizens or permanent residents. Large container ships that already stop at several ports along the U.S. coasts could move containers between those ports at low cost but for the Jones Act. ==Expanding into the future==