Article 28 of the agreement allows the parties to terminate the contract following a communication to the custodian, but the broadcast communication may not take place until three years after the agreement for the country comes into force. The payment is made one year after the transfer. Alternatively, the agreement provides that the withdrawal of the UNFCCC, under which the Paris Agreement was adopted, also withdraws the state from the Paris Agreement. The terms of the UNFCCC`s exit are the same as those of the Paris Agreement. The main objective of the agreement is to keep the increase in the average global temperature at a level well below 2oC above pre-industrial levels, including by reducing greenhouse gas emissions. The agreement is different from the 1997 Kyoto Protocol, the last UNFCCC amendment, which was widely adopted, as no annex is established to reduce the liability of developing countries. On the contrary, emission targets have been negotiated separately for each nation and must be implemented voluntarily, so U.S. officials view the Paris agreement as an executive agreement rather than a legally binding agreement. This reversed the U.S. Congress` commitment to ratify the agreement.  In April 2016, the United States signed the Paris Agreement and adopted it by executive order in September 2016. President Obama forced the United States to pay $3 billion for the Green Climate Fund.
 The Fund has set a goal of raising $100 billion per year by 2020. In April 2017, a group of 20 MPs from the Right-wing Alternative for Germany, the UK Independence Party and other parties sent a letter to Trump asking him to withdraw from the Paris agreement.  On May 25, 2017, 22 Republican senators, including Senate Majority Leader Mitch McConnell, sent a two-page letter to Trump asking him to withdraw the United States from the Paris Agreement.  This letter was written by Senator John Barrasso, Chairman of the Senate Environment and Public Works Committee, and Senator Jim Inhofe, known for his many years of climate change denial.  Most of the signatories to the letter were elected by states that depended on the burning of fossil fuels (coal, oil and gas);  The group of 22 senators had received more than $10 million in election contributions from fossil fuel companies over the past three election cycles.  Earlier this week, a group of 40 Democratic senators sent a letter to Trump asking him to keep America in the Paris agreement, writing that “a withdrawal from America would damage credibility and influence on the world stage.”  Former President Bill Clinton wrote: “It is a mistake to say goodbye to the Treaty of Paris.