On June 1, 2017, President Trump announced that the United States would withdraw from the agreement, but also expressed his willingness to renegotiate the agreement or renegotiate a new one. Other countries reiterated their strong support for the Paris Agreement, saying they were not open to further negotiations. The United States officially initiated withdrawal from the Paris Agreement on November 4, 2019; it entered into force on 4 November 2020. President Obama was able to formally bring the United States into the international agreement through executive action, as he did not impose any new legal obligations on the country. The United States already has a number of tools in its books, according to legislation already passed by Congress, to reduce carbon pollution. The country formally acceded to the agreement in September 2016 after submitting its proposal for participation. and further acknowledging “that much greater efforts to reduce emissions will be needed to keep the global average temperature rise below 2°C by reducing emissions to 40 gigatons, or 1.5°C.”  [Clarification needed] The Paris Agreement is the world`s first comprehensive climate agreement.  These transparency and accountability provisions are similar to those in other international agreements. While the system does not include financial sanctions, the requirements are intended to easily track each nation`s progress and foster a sense of global peer pressure, which discourages any hesitation between countries that might consider doing so.
When the agreement received enough signatures on October 5, 2016 to cross the threshold, US President Barack Obama said: “Even if we achieve all the goals. we will only reach part of where we need to go. He also said that “this agreement will help delay or avoid some of the worst consequences of climate change. It will help other countries reduce their emissions over time and set bolder targets as technology advances, all within a robust transparency system that allows each country to assess the progress of all other nations.   At the 2011 United Nations Climate Change Conference, the Durban Platform (and the ad hoc working group on the Durban Platform for Enhanced Action) was established with the aim of negotiating a legal instrument for climate action from 2020. .