Rejoining the Paris Agreement Is the Easy Part for Biden on Climate Change

Rejoining the Paris Agreement Is the Easy Part for Biden on Climate Change
A demonstrator holds a “Climate SOS” sign during a post-election march in New York City, Nov. 4, 2020 (Photo by John Nacion for STAR MAX/IPx via AP Images).

Last Wednesday, with a divided and anxious citizenry awaiting the outcome of an agonizingly close election, President Donald Trump voted for climate change, as the United States became the first nation to formally withdraw from the Paris Agreement. The good news is that Joe Biden, now the winner of the presidential election, can restore U.S. participation at the stroke of a pen. The bad news is that rejoining the pact won’t by itself do much to reduce greenhouse gas emissions. That will require dramatic domestic action from a deeply divided nation.

The Paris Agreement is the most impressive multilateral agreement ever reached to combat global warming. Negotiated at the 16th Conference of Parties to the U.N. Framework Convention on Climate Change in 2015, it commits signatories to hold the rise in average global temperatures from the pre-industrial era to 1.5 degrees Celsius, with 2 degrees Celsius as a fallback goal. Each country can determine how it will contribute to this goal, tailoring its actions to national circumstances. Parties further agree to review progress every five years, to “ratchet up” their efforts over time, and to provide poorer countries with $100 billion in climate financing. Unlike the 1997 Kyoto Protocol, it imposes obligations on developing and emerging countries rather than merely advanced economies.

The Paris Agreement came into force on Nov. 4, 2016, after 55 countries responsible for 55 percent of global emissions had formally joined it. Given the enormous hurdles to securing the consent of the Republican-controlled Senate at the time, President Barack Obama treated the accord as an executive agreement rather than pursue treaty ratification. This made it easier for his successor to leave the accord.

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