No Country Has Closed the Lower Mississippi River

A Domestic Waterway, Open by Law

The premise is flawed: no country has closed access to the lower Mississippi River because the entire river lies within the United States.

Legal Guarantees

• US Constitution, Article I, Section 8: Congress regulates commerce on navigable waters.
• Northwest Ordinance (1787): "Navigable waters... shall be common highways, forever free."
• Supreme Court (Gibbons v. Ogden, 1824): Federal commerce power over navigation is plenary.

Historical Context

• 1795 Pinckney's Treaty (Spain): Guaranteed US navigation rights to New Orleans.
• 1803 Louisiana Purchase: US acquired the entire river.
• Civil War: Union blockade of Confederate ports; Vicksburg campaign (1863) reopened river. Never "closed" by a foreign power.

Modern Management

US Army Corps of Engineers maintains 9-ft navigation channel (Baton Rouge to Cairo). Coast Guard regulates traffic. Ports (New Orleans, Baton Rouge, Plaquemines) handle 500M+ tons/yr. No nation can "close" it—only US law or natural disaster (flood, hurricane) restricts traffic temporarily.

International Analogy

Compare to Danube (10 countries), Rhine (6), Mekong (6), Nile (11)—where treaties govern shared access. The Mississippi is uniquely sovereign.