The Connect U.S. Fund (CUSF) was a Washington, D.C.-based nonprofit that promotes responsible U.S. global engagement in issues like nuclear nonproliferation, human rights, climate change, and development. It was founded in 2004 by several foundations and shut down in 2013. The organization supported grantees and other non-governmental organizations in their efforts to collaborate, engage policy makers, and bring issues to the attention of the media. Its last President was Nancy Soderberg.