World leaders welcomed the United States’ official return to the Paris climate accord Friday. They say they expect America to prove its seriousness to the cause. United States is expected to announce its new national 2030 target for cutting fossil fuel emissions. University of Maryland environment professor Nate Hultman said he expects a 2030 target of cutting carbon dioxide emissions between 40% and 50% from the 2005 baseline levels.“We can no longer delay or do the bare minimum to address climate change. This is a global existential crisis, and all of us will suffer if we fail,” Biden said, speaking to the Munich security conference. Officially, the United States was only out of the worldwide global climate pact for 107 days.
Trump reversed Obama-era initiatives to rein in oil, gas and coal emissions and opened new federal lands and waters to exploration and drilling. American cities, states and businesses still worked to reduce heat-trapping carbon dioxide but without the participation of the federal government. One fear was that other nations would follow America in abandoning the climate fight, but none did. Biden is working to overturn those measures. United Nations Secretary-General Antonio Guterres said Thursday that the official American reentry “is itself very important.”In April Biden plans to host world leaders for an Earth Day summit.