The EU and its member states are among the nearly 190 parties to the Paris Agreement. The EU formally ratified the agreement on 5 October 2016, allowing it to enter into force on 4 November 2016. In order for the agreement to enter into force, at least 55 countries representing at least 55% of global emissions had to file their ratification instruments. The Paris Agreement (the Paris Agreement)  is an agreement within the framework of the United Nations Framework Convention on Climate Change (UNFCCC) that deals with the reduction, adaptation and financing of greenhouse gas emissions and was signed in 2016. The language of the agreement was negotiated by representatives of 196 States Parties at the 21st UNFCCC Conference of parties held at Le Bourget, near Paris, France, and agreed on 12 December 2015.   Since February 2020, all 196 UNFCCC members have signed the agreement and 189 have left.  Of the seven countries that are not parties to the law, Iran and Turkey are the only major emitters. The Paris Agreement, marked by the historic agreement once adopted, owes its success not only to the return of a framework favourable to climate change and sustainable development, but also to efforts to review the management of international climate negotiations. The Paris Agreement is supported by new initiatives that will all be adapted to the difficulties identified at the previous COP.
This innovative approach is based on four elements: the adoption of a universal agreement. Define each state`s national contributions to reducing greenhouse gas emissions. Although the text of the agreement does not mention the content of these contributions, it obliges signatory states to establish a contribution plan, implement it and raise amounts every five years. Civil society`s participation in the negotiation process through the action programme adopted in November 2016, which brings together civil society initiatives from 180 countries. In 2015, members of civil society were appointed at a high level to facilitate civil society participation in the intergovernmental process. The financial commitment of developed countries to contribute up to $100 billion a year from 2020. This funding should give priority to the states most affected by the effects of climate change. On August 4, 2017, the Trump administration officially announced to the United Nations that the United States intends to withdraw from the Paris Agreement as soon as it has a legal right to do so.  The formal declaration of resignation could not be submitted until after the agreement for the United States came into force on November 4, 2019 for a three-year date.   On November 4, 2019, the U.S. government filed the withdrawal notice with the Secretary-General of the United Nations, custodian of the agreement, and formally withdrew from the Paris Agreement a year later, when the withdrawal came into effect.
 After the November 2020 elections, President-elect Joe Biden promised to reinstate the United States in the Paris Agreement for his first day in office and renew the U.S. commitment to climate change mitigation.   The level of NCC defined by each country will determine the objectives of that country. However, the “contributions” themselves are not binding under international law because of the lack of specificity, normative nature or language necessary to establish binding standards.  In addition, there will be no mechanism to compel a country to set a target in its NDC on a specified date and not for an application if a defined target is not achieved in an NDC.   There will be only a “Name and Shame” system  or as UN Deputy Secretary General for Climate Change, J. Pésztor, CBS News (US), a “Name and Encouragement” plan.  Since the agreement has no consequences if countries do not live up to their commitments, such a consensus is fragile.