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The United States formally enters the Paris Agreement

On 3 September 2016, in Hangzhou, President Obama announced that the United States had formally joined the Paris Agreement, depositing acceptance with China the same day. A 2025 withdrawal is a later president’s child. In the causal graph this event strengthens Decarbonization and climate-mitigation policy, a driver that weakens Global CO2 emissions per capita — an improving welfare path.

Sources: [1][2]

Read the full account

On 3 September 2016, in Hangzhou, President Obama announced that the United States had formally joined the Paris Agreement, depositing acceptance with China the same day. A 2025 withdrawal is a later president’s child.

Context

The 2015 Paris text sat as parent. Neighbouring CPP is a neighbour domestic rule. He did not sit as every other party’s NDC. Congress did not pass a climate statute for the deposit.

CPP 3 August 2015 is a neighbour EPA rule. TPP February 2016 is a neighbour signature that did not become law.

A United States president proposes, signs, vetoes, and directs the executive. Congress enacts statutes. The Federal Reserve, states, courts, and later presidents share later series. Office-holding is not authorship of every later outcome. Allegation is not a completed judgment. Legislative achievements require shared congressional attribution. He does not set the federal funds rate, write a state Medicaid waiver by himself, or convert a 2009 oath into a unique 2016 uninsured coefficient. A signature is not unique authorship of a House and Senate text. A troop order is not authorship of every later round. He is not president as of 27 August 2026. Donald Trump is president from 20 January 2025. Joe Biden was president 2021–2025.

Why it matters

The path is decarbonization policy: a completed U.S. depositary entry into Paris, remaining later withdrawal named.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Barack Obama

    Person

    Direct responsibility

    responsibility level 0.8 · verified

    He directed the deposit. State notified. Other parties share the Agreement. Congress did not enact the NDC.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.BBC — Paris climate deal: US and China formally join pactBBC · High credibility · verified
  2. 2.White House archives — 3 September 2016 remarks on formally entering the Paris AgreementWhite House (archives) · High credibility · verified
What the sources establish

White House (archives) carries the official instrument or communique. BBC records the same dated act independently.

Established: 3 September 2016 U.S. formal joining, independently reported.

Not established: a unique later U.S. emissions coefficient from Hangzhou, or that other parties’ NDCs uniquely sat because of that hour.

State notified. Other parties share the Agreement. Congress did not enact the NDC.. A later repeal, court stay, or successor order would be a different Fact with a different date. That pair identifies The United States formally enters the Paris Agreement, not a later speech about The United States formally enters the Paris Agreement.

Co-authors and later implementers named in Context remain on the file. If a later repeal, stay, or successor instrument exists, it needs its own date and its own row. The contribution described on this Person row is limited to He directed the deposit. State notified. Other parties share the Agreement. Congress did not enact the NDC. That limit is the alternative to treating office-holding as authorship of every later series.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorBarack Obama
  2. contributed toFactThe United States formally enters the Paris Agreement
  3. strengthensDrivers (2)Decarbonization and climate-mitigation policy
  4. weakensIndicatorGlobal CO2 emissions per capita

Cite this page

Factrail. (2026). The United States formally enters the Paris Agreement. Factrail. https://factrail.ai/facts/us-obama-paris-2016

https://factrail.ai/facts/us-obama-paris-2016

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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