With these measures, as well as the strong INDCs presented by Norway and Switzerland, countries that have recorded more than 50% of global CO2 emissions have either announced their targets or officially communicated their targets. Today`s action by the United States shows real momentum towards a successful climate agreement in December in Paris and shows that President Obama is determined to be a leader on the international stage. The Trump administration has continued its campaign to systematically roll back U.S. climate policy. The government has adopted a new car fuel efficiency rule to reduce Obama-era auto standards, revise standards for energy efficiency appliances, and weaken mercury emissions rules from oil- and coal-fired power plants. The Trump administration, through the Environmental Protection Agency (EPA), has suspended enforcement of environmental legislation in response to the pandemic. These reversals are only the most recent in a series of policy reversals. However, many states oppose backtracking with legal challenges. Under the Paris Agreement, adopted in December 2015, the INDC will be the first defined national contribution (NDC) if a country ratifies the agreement, unless it decides to simultaneously file a new NCP. Once the Paris Agreement is ratified, the NDC will be the first greenhouse gas target under the UNFCCC, which will apply to both developed and developing countries.  On August 3, 2016, China and the United States ratified the agreement.
Together, they contribute 38% of total global emissions, with China alone emitting 20%.  With 4.1% of emissions, India adopted the Paris Agreement on 2 October 2016 by depositing the instrument of ratification at the United Nations.  intends to participate in joint EU efforts to reduce emissions across the region by 40% by 2030 compared to 1990 levels. The precise commitment it will make under this burden-sharing approach has yet to be decided; In the absence of an agreement, Iceland will submit a new INDC. It is the INDC. A fourth likely goal will be sustainability, that is, the return to Paris in a way that will promote the long-term participation of the United States. This could include participation in internal work with respect to the US NDC.  An unconditional 20% reduction in emissions by 2030 compared to business as usual.
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