Panama Canal
Colombia, France, and later the United States controlled the territory surrounding the canal during construction. The US continued to control the canal and surrounding Panama Canal Zone until the 1977 Torrijos–Carter Treaties provided for handover to Panama. After a period of joint American–Panamanian control, in 1999, the canal was taken over by the Panamanian government. It is now managed and operated by the government-owned Panama Canal Authority.
Isthmian Canal Commission
The Isthmian Canal Commission (often known as the ICC) was an American administration commission set up to oversee the construction of the Panama Canal in the early years of American involvement. Established the February 26, 1904, it was given control of the Panama Canal Zone over which the United States exercised sovereignty. The commission reported directly to Secretary of War William Taft.