Who reinstated U.S. participation in the Paris Agreement in 2021?

• A. President Clinton
• B. President Obama
• C. President Biden
• D. President Trump

Answer: (C)

Reentry into the Paris Agreement in 2021 happened under President Biden. The Paris Agreement is a global pact to limit climate change, and the United States originally joined during the Obama administration in 2015. The Trump administration then withdrew from the agreement. When Biden took office in 2021, he moved to rejoin, signing actions to re-enter, and the United States officially returned to the Paris Agreement on February 19, 2021. So, the 2021 reinstatement is associated with Biden. Clinton and Obama contributed to U.S. climate policy earlier, but neither rejoined in 2021, while Trump had initiated the withdrawal.