The United States and the Paris agreement: A Timeline of Involvement
The Paris Agreement, a landmark international accord adopted in 2015, aims to limit global warming to well below 2, preferably to 1.5 degrees Celsius, compared to pre-industrial levels. The United States’ involvement has been complex, marked by both commitment and withdrawal. This article details the history of U.S. participation, the reasons behind shifts in policy, and the current status as of January 27, 2026.
The Initial Commitment and Ratification (2015-2017)
The Paris Agreement was negotiated by representatives from 196 parties at the 21st Conference of the Parties (COP21) in Paris,France. The United States, under the Obama management, played a key role in forging the agreement. In November 2016, the agreement officially met the threshold for entry into force after ratification by enough countries, including the U.S. [UN Sustainable Growth].The U.S. committed to reducing its greenhouse gas emissions by 26-28% below 2005 levels by 2025.
Withdrawal Under the Trump Administration (2017-2021)
in June 2017, President Donald Trump announced the united States’ intention to withdraw from the Paris agreement, citing concerns about the economic impact on the U.S. and a perceived unfairness to American businesses. The formal withdrawal process began in November 2020, and the U.S. officially exited the agreement on November 4, 2020, the day after the 2020 presidential election. [Council on Foreign Relations]. This decision drew widespread international criticism.
Rejoining the Agreement (2021-2025)
On his first day in office, January 20, 2021, President Joe Biden signed an executive order initiating the process for the United States to rejoin the Paris Agreement. The U.S. officially rejoined the agreement on february 19, 2021. [The White House]. The Biden administration afterward announced a new, more ambitious target: reducing U.S. emissions by 50-52% below 2005 levels by 2030.
recent Developments and Current Status (2025-2026)
As of January 27, 2026, the United States remains a party to the Paris Agreement. Though, the political landscape surrounding climate change continues to evolve.Recent reports indicate ongoing efforts to implement policies aimed at achieving the 2030 emissions reduction target, including investments in renewable energy and electric vehicles. [environmental Protection agency].The long-term commitment of the U.S. to the agreement will likely depend on future administrations and evolving political priorities.
Key Takeaways
- The U.S. was instrumental in creating the Paris Agreement but initially withdrew under the Trump administration.
- President Biden rejoined the agreement and set more ambitious emissions reduction targets.
- The U.S. commitment to the Paris Agreement remains subject to political shifts.
- Achieving the U.S. emissions reduction goals requires critically important policy changes and investments.
Frequently Asked Questions (FAQ)
What is the Paris Agreement?
The Paris Agreement is an international treaty on climate change, adopted in 2015, that aims to limit global warming to well below 2 degrees Celsius, preferably to 1.5 degrees Celsius, compared to pre-industrial levels.
Why did the U.S.initially withdraw from the agreement?
the Trump administration cited concerns about the economic impact on the U.S. and a perceived unfairness to American businesses as reasons for withdrawing.
What are the U.S.’s current emissions reduction targets?
The U.S. has committed to reducing its greenhouse gas emissions by 50-52% below 2005 levels by 2030.









