The U.S. has hailed a 'significant Cancun Climate Change Conference, saying the decisions reached there represent a balanced and significant step forward. U.S. President Barack Obama called his Mexican counterpart Felipe Calderon and congratulated him for his leadership and Mexicos excellent work chairing the Cancun conference to a successful conclusion that builds on the historic Copenhagen Accord and advances the effort to address the challenge of climate change, the White House said. In a statement, Secretary of State Hillary Clinton said the Cancun Agreements secured a set of balanced international decisions under the United Nations Framework Convention on Climate Change (UNFCC) which represent meaningful progress in global response to climate change. The Cancun Agreements represent a balanced and significant step forward. In the days and months ahead, the United States will work with our friends and partners to keep the world focused on this urgent challenge and to continue building on this progress, Ms. Clinton said.