[389]
Before and during the 2021 United Nations Climate Change Conference (COP21), Biden promoted an agreement that the U.S. and the European Union cut methane emissions by a third by 2030 and tried to add dozens of other countries to the effort.[390] He tried to convince China[391] and Australia[392] to do more. He convened an online Major Economies Forum on Energy and Climate Change to press other countries to strengthen their climate policy.[393][394] Biden pledged to double climate funding to developing countries by 2024.[395] Also at COP26, the U.S. and China reached a deal on greenhouse gas emission reduction. The two countries are responsible for 40% of global emissions.[396]

2022
In early 2022, Biden made efforts to change his public image after entering the year with low approval ratings due to inflation and high gas prices, which continued to fall to approximately 40% in aggregated polls by February.[397][398][399] He began the year by endorsing a change to the Senate filibuster to allow for the passing of the Freedom to Vote Act and John Lewis Voting Rights Act, on both of which the Senate had failed to invoke cloture.