The magazine portrayed Trudeau's position as a key factor that would make it hard for other countries to pressure the U.S.to do more on climate change.
Important players in U.S. industry and individual cities and states are already implementing changes aimed at meeting the targets laid down in Paris, where most of the world's countries agreed to try and cap global temperature rises at 2C above pre-industrial levels.
The top USA official at the meeting, Environmental Protection Agency chief Scott Pruitt, left the meeting after only few hours of one-on-one talks held with his counterparts from Germany, Japan, and Britain. The final declaration of the event also included other issues of world interest such as the fulfillment of the goals of the UN Agenda 2030 for sustainable development, particularly on Africa, the efficiency of resource management related to circular economy and management of marine waste.
President Trump has picked up his marbles, left the sandbox of the Paris Climate Accord, and gone home.
Scott Pruitt, head of the U.S. Environmental Protection Agency, attended the first few hours of the two-day summit before returning to Washington for a Cabinet meeting, U.S. officials said.
The Group of Seven countries could not bridge the gap with the US with regards to the Paris Agreement on climate change at a meeting of its environment ministers which began on Sunday.
The United States is the world's second biggest carbon emitter behind China.
The momentum of existing climate-change efforts and the availability natural gas, wind and solar power mean those loyal to the Paris accord in the US will have an easier time, with emissions expected to fall overall for years, said Robert Perciasepe with the Center for Climate and Energy Solutions, who worked with Bloomberg's group on the climate pledge.
Hulot added: "Symbolically it is important that the United States remains in an environmentalist dynamic, even if it wants to maintain a degree of latitude on climate change and prefers a bilateral approach to a multilateral one on that issue".
PRESIDENT Donald Trump's plan to withdraw the United States of America from the 2015 Paris Agreement on Climate Change is a setback for the efforts of responsible countries trying to reduce carbon emissions. His plans to renegotiate a more favourable deal for the USA have been rebuffed by the leaders of Germany, France and Italy.
Germany and California, the US's wealthiest state, agreed Saturday to work together to keep the Paris accords on track.
"We can not allow one nation to derail what 190 other nations are happy to do", he said.
President Donald Trump announced the U.S. was withdrawing from the Paris accord earlier this month, framing it as a "reassertion of America's sovereignty".