Mar Del Plata, Argentina ? Leaders from across the Americas ended their two-day summit Saturday without agreeing whether to restart talks on a free trade zone stretching from Alaska to Chile.

Argentine Foreign Minister Rafael Bielsa said the summit’s declaration would state two opposing views: one favoring the proposed Free Trade Area of the Americas and another saying discussions should wait until after World Trade Organization talks in December.

The decision came after negotiations extended eight hours past the scheduled deadline. Almost all the leaders – including President Bush – left during the discussions and put other negotiators in charge.

Mexico, the United States and 27 other nations wanted to set an April deadline for talks, but that was opposed by Brazil, Argentina, Uruguay, Paraguay and Venezuela.

The United States says the proposed Free Trade Area of the Americas, stretching from Canada to Chile, would open up new markets for Americans and bring wealth and jobs to Latin America.

The zone’s main opponent, Venezuelan leader Hugo Chavez, said it would enslave Latin American workers. He came to the summit vowing to “bury FTAA.”

In the declaration, the five dissenting countries stated: “The conditions do not exist to attain a hemispheric free trade accord that is balanced and fair with access to markets that is free of subsidies and distorting practices.”

President Bush talks to Canada's Prime Minister Paul Martin on Saturday before leaving the America's Summit in Mar del Plata, Argentina.

The last-minute haggling at the summit of 34 Latin American and Caribbean nations came after Brazil – Latin America’s largest economy – hedged at setting a firm date for talks because it wants to focus on WTO talks aimed at cutting tariffs around the world and boosting the global economy.

“Anything we do now, before the WTO meeting, could confuse the facts, and we’d be creating an impediment to the WTO,” Brazilian President Luiz Inacio Lula da Silva told reporters on the sidelines of the meeting at Argentina’s most renowned summer resort.

Mar del Plata was calm Saturday after protesters opposed to Bush’s presence at the FTAA clashed in street battles with riot police, burning and ransacking businesses 10 blocks from the theater where the summit opened. Sixty-four people were arrested, but police reported no deaths or major injuries.

Security remained tight. A downtown section of Mar del Plata remained closed by metal barriers, and police and soldiers toted semiautomatic weapons.

Protests have become commonplace at summits, especially those dealing with free trade and U.S. policies. But Friday’s violence was on a much smaller scale than clashes in 2001 during the Americas Summit in Canada, when police detained 400 people and scores were injured.