The number of vessels in the Great Lakes-Seaway system exceeds the five-year average as ships deliver much-needed supplies and make a final push to export grain before the St. Lawrence Seaway closes Dec. 30.

When the much-anticipated expansion of the Panama Canal is completed late next year, cargo ships the size of aircraft carriers will ferry goods from Latin America and Asia directly to East Coast ports and back. These ships - up to two-and-a-half times bigger than those currently allowed - will uproot trade patterns developed over the last century and will affect nearly every sector of the U.S. economy.

Import cargo volume at the nation's major retail container ports is expected to see a final surge and set a new monthly record in October as the holiday season approaches, according to the monthly Global Port Tracker report released by the National Retail Federation and Hackett Associates.

The value of exports from America's foreign-trade zones increased by 13.7 percent in 2013, to a record high $79.5bn in merchandise exported, according to figures released by the U.S. Foreign-Trade Zones Board in its Annual Report to Congress. At $835.8bn, the 2013 value of received merchandise into FTZs also reached a new high, surpassing the previous year’s record of $732.2bn – a 14.1 percent increase.