U.S. President George W. Bush, Mexican President Felipe Calderon and Canadian Prime Minister Stephen Harper will stage a summit on Aug. 20-21 in Canada to discuss drug trafficking, security, trade and cooperation.
Mexico's Foreign Minister Patricia Espinosa said Wednesday this would be the third summit under the Security and Prosperity Partnership (SPP) mechanism, created in March 2005.
Energy and prosperity were also on the agenda, she said.
She added that the governments would not sign any documents, but would reiterate a promise to share information to fight crime at the meeting which is to take place at Montebello Castle, Quebec.
Mexico and the United States recognize that they share a problem of insecurity and need to help one another in information sharing, training and equipment, while respecting each other's sovereignty, Espinosa said.
The SPP has proved unpopular with some non-governmental organizations including the Council of Canadians, which has announced a program of protests against the summit.
Canadian police are preparing security measures for the area where the leaders are to meet.
Also planning protests is U.S. group the Coalition Against a Union of North America, which is unhappy with what it considers a subordination of Canada and Mexico to the United States.