The G-7 summit, which was held in Italy this weekend, came to an end with no decision on the Paris Agreement.
Group of Seven leaders said in a statement that they had failed to come to an agreement on climate change with U.S. President Donald Trump.
The Group of Seven summit is a meeting of leaders from seven entities: Canada, France, Germany, Italy, Japan, United Kingdom, United States and the European Union.
The statement read: "The United States of America is in the process of reviewing its policies on climate change and on the Paris Agreement and thus is not in a position to join the consensus on these topics."
Climate change activist Yolanda Lemaitre took to Twitter to criticize the decision.
In the statement, the leaders also mentioned their commitment to the Paris Agreement, which sets out a "global action plan to put the world on track to avoid dangerous climate change by limiting global warming to well below 2C."
A top advisor previously said Trump's views on climate change were still "evolving." Pres. Trump has called global warming a "hoax" in previous instances.
German Chancellor Angela Merkel called the climate talks "very difficult, if not to say, very unsatisfactory."