Roosevelt was angered by the Colombians' actions, especially when the Colombian Senate made a counteroffer that was more financially advantageous to Colombia. A Frenchman who had worked on his nation's canal efforts, Philippe Bunau-Varilla, represented Panamanian insurgents; he met with Roosevelt and with Secretary of State John Hay, who saw to it that his principals received covert support. When the revolution came in November 1903, the United States intervened to protect the rebels, who succeeded in taking over the province, declaring it independent as the Republic of Panama. Bunau-Varilla was initially the Panamanian representative in the United States, though he was about to be displaced by actual Panamanians, and hastily negotiated a treaty, giving the United States a zone wide and full authority to pass laws to govern that zone. The Panama Canal Zone (Canal Zone, or Zone) excluded Panama City and Colón, but included four offshore islands, and permitted the United States to add to the zone any additional lands needed to carry on canal operations. The Panamanians were minded to disavow the treaty, but Bunau-Varilla told the new government that if Panama did not agree, the United States would withdraw its protection and make the best terms it could with Colombia. The Panamanians agreed, even adding a provision to the new constitution, at US request, allowing the larger nation to intervene to preserve public order.