In announcing his decision to withdraw from the Paris climate accord, President Trump also said the United States would stop contributing to the Green Climate Fund, a United Nations program that he claimed could eventually cost the country “billions and billions and billions” of dollars.

How much have rich countries pledged?

Industrialized countries have voluntarily pledged $10.3 billion since 2013 to help poorer nations reduce greenhouse gas emissions and address the effects of climate change. The United States has pledged by far the most — $3 billion, twice that of the second-largest pledger, Japan. But on a per-capita basis, many other countries have offered more than the United States. Swedes, for example, will contribute nearly $60 each.

Per Person Contributions to the Green Climate Fund If countries fulfill their signed pledges Sweden $59.31 Luxembourg 58.63 Norway 50.20 Monaco 28.89 Britain 18.77 France 15.64 Denmark 12.73 Germany 12.40 Switzerland 12.21 Japan 11.80 9.41 United States If the U.S. fulfilled its original $3 billion committment Finland 8.49 Netherlands 7.94 Australia 7.92 Canada 7.79 Belgium 6.18 Italy 4.54 Austria 4.09 Spain 3.46 South Korea 1.99 Sweden $59.31 Luxembourg 58.63 Norway 50.20 Monaco 28.89 Britain 18.77 France 15.64 Denmark 12.73 Germany 12.40 Switzerland 12.21 Japan 11.80 U.S. 9.41 If the U.S. fulfilled its original $3 billion committment Finland 8.49 Netherlands 7.94 Australia 7.92 Canada 7.79 Belgium 6.18 Italy 4.54 Austria 4.09 Spain 3.46 South Korea 1.99 Source: Green Climate Fund

If the United States contributed its full pledge, the total would be a little less than $10 per American. With Mr. Trump stopping payments, the United States will have contributed $1 billion, or just more than $3 per person.

Where does the money go?

The fund has a portfolio of more than 40 projects, using $2.2 billion of its own money and $5 billion from development agencies and banks.

Approved Funding Proposals, as of October 2016 Source: Overseas Development Institute , G.C.F. press releases