The treaty's rejection by Colombia's Senate directly prompted U.S. support for Panamanian independence and enabled construction of the Panama Canal.
Key Facts
- Date signed
- January 22, 1903
- Lease duration offered
- 100 years, renewable
- Upfront payment offered
- 10000000 USD (gold coin)
- Annual payment offered
- 250000 USD (gold coin)
- Strip width across isthmus
- 6 miles
- New Panama Canal Company price
- 40000000 USD
By the Numbers
Location
Cause → Event → Consequence
The United States sought to build a canal across the Isthmus of Panama and needed territorial rights from Colombia, which controlled the region. Secretary of State John M. Hay negotiated terms with Colombian diplomat Tomás Herrán, though Herrán acted with minimal government oversight, and Colombian legislators considered the $10 million offer far too low given the U.S. was paying $40 million for the New Panama Canal Company.
The Hay–Herrán Treaty was signed on January 22, 1903, granting the United States a renewable 100-year lease on a six-mile-wide canal zone in exchange for $10 million and $250,000 annually. The U.S. Senate ratified it on March 14, 1903, but Colombia's Senate refused to ratify the treaty, rendering it void.
Unwilling to renegotiate terms, the United States shifted its strategy and extended political and military support to separatist forces in Panama. This backing facilitated Panama's independence from Colombia and cleared the path for the United States to negotiate a new canal treaty directly with the newly formed Panamanian government, ultimately enabling construction of the Panama Canal.
Political Outcome
Treaty failed ratification in the Colombian Senate and had no legal effect; U.S. subsequently supported Panamanian independence.
Colombia controlled the Isthmus of Panama and held leverage over any canal route negotiations.
Panama declared independence with U.S. backing, transferring canal zone negotiating power to the new Panamanian government.