The NRDC Action Fund is the political arm of the major environmentalist group Natural Resources Defense Council, helping its affiliated organization advance its objectives through support for environmentalist legislation and candidates. Its policy stances primarily revolve around opposing conventional energy, opposing natural resource extraction, and increasing protections for endangered animals and public lands.
It is an outspoken supporter of radical environmentalist legislation like the “Green New Deal,” a package of left-wing policies critics have characterized as a “radical, top-down, socialist makeover of the entire U.S. economy” and which proponents have called “a how-do-you-change-the-entire-economy” plan. 
The NRDC Action Fund was launched in 1999 to give the Natural Resources Defense Council direct influence over legislation and elections. 
The Action Fund was very supportive of the Obama administration, referring to former President Barack Obama as a “Clean Energy Champion… who took unprecedented actions in the past four years to protect our air and produce clean energy jobs.” 
After the Trump administration assumed control of the White House, the NRDC Action Fund returned to being critical of the Executive. In response to President Donald Trump announcing his re-election at a Florida rally, Executive Director Kevin Curtis accused the President of being “a disaster for American leadership.” 
The NRDC Action Fund regularly blogs about recent environmental legislation and climate change policy proposals from Democratic presidential candidates in the 2020 Presidential election. 
On occasion, it will mobilize activists to either call or meet with their legislators regarding the environment.
The Action Fund also endorses candidates, but it redirects all candidate donations to GiveGreen, a partnered project of the LCV Victory Fund and NextGen Climate Action that directs donors to environmentalist candidates. 
In addition to being overseen by the same executive staff as the NRDC—which includes president Rhea Suh and director John H. Adams—the Action Fund is headed by executive director Kevin Curtis. Instead of being paid through the Action Fund, Curtis’ salary is covered by the NRDC; according to the most recent publicly available filings, he makes $217,208 a year.
Before becoming Executive Director at the NRDC Action Fund, Kevin Curtis was the chief program and advocacy officer at the Climate Reality Project. He was also a deputy director of the Pew Environment Group. 
The NRDC Action Fund’s most recent publicly available filings from 2018 show total revenues of $5,056,695 and total expenses of $5,838,331.  Its single largest grant was one for $537,500 to the League of Conservation Voters.