Question: Bruce R. Lindsey (born 1950/51) is an American lawyer and non-profit executive, he serves as chairman of which non-profit organization under section 501(c)(3) of the U.S. tax code?

Context paragraphs:
Citizens Against Government Waste: Citizens Against Government Waste (CAGW) is a 501(c)(3) non-profit organization in the United States.  It functions as a think-tank, "government watchdog" and advocacy group for fiscally conservative causes.  The Council for Citizens Against Government Waste (CCAGW) is the lobbying arm of CAGW, organized as a section 501(c)(4) organization and therefore is permitted to engage in direct lobbying activities.  According to its web site, "CAGW is a private, non-partisan, non-profit organization representing more than one million members and supporters nationwide.  CAGW's stated mission is to eliminate waste, mismanagement, and inefficiency in the federal government."

Soldiers for the Truth Foundation: The Soldiers for the Truth Foundation is a 501(c)(3) public charity organization in the United States dedicated to military reform.  Its stated mission is to inform the public, Congress, and the media on issues related to the training, readiness, equipment and leadership of US armed forces.  The Foundation is registered as a non-profit organization under section 501(c)(3) of the Internal Revenue Code.  Notable issues in which the foundation has been involved include campaigning for better body armor for troops serving in Iraq and contributing to coverage of the abuse of prisoners at Abu Ghraib.

Bruce Lindsey: Bruce R. Lindsey (born 1950/51) is an American lawyer and non-profit executive.  He served in the White House during the Presidency of Bill Clinton.  He was named in a lawsuit during the Whitewater controversy, and he testified before a grand jury regarding the sexual misconduct allegations surrounding Bill Clinton in the run-up to his impeachment.  He is a partner of Wright, Lindsey & Jennings, a Little Rock, Arkansas-based law firm, and serves as chairman of the Clinton Foundation.

Clinton Foundation: The Clinton Foundation (founded in 1997 as the William J. Clinton Foundation), and from 2013 to 2015, briefly renamed the Bill, Hillary & Chelsea Clinton Foundation) is a non-profit organization under section 501(c)(3) of the U.S. tax code.  It was established by former President of the United States Bill Clinton with the stated mission to "strengthen the capacity of people in the United States and throughout the world to meet the challenges of global interdependence."  Its offices are located in New York City and Little Rock, Arkansas.

Johnson Amendment: The Johnson Amendment is a provision in the U.S. tax code, since 1954, that prohibits all 501(c)(3) non-profit organizations from endorsing or opposing political candidates.  Section 501(c)(3) organizations are the most common type of nonprofit organization in the United States, ranging from charitable foundations to universities and churches.  The amendment is named for then-Senator Lyndon B. Johnson of Texas, who introduced it in a preliminary draft of the law in July 1954.

Hispanic American Center for Economic Research: The Hispanic American Center for Economic Research (HACER) is a non-profit organization based in Washington, D.C. with a tax exemption status under section 501(c)(3) of the tax laws of the United States.  HACER's mission is to promote the study of issues pertinent to the countries of Hispanic America as well as Hispanic Americans living in the United States, especially as they relate to the values of personal and economic liberty, limited government under the rule of law, and individual responsibility.

501(c)(3) organization: A 501(c)(3) organization is a corporation, trust, unincorporated association, or other type of organization that is exempt from federal income tax under section 501(c)(3) of Title 26 of the United States Code.  It is the most common type of the 29 types of 501(c) nonprofit organizations in the United States.  Many charitable non-profits in the United States that Americans commonly know of, and often make donations to, are 501(c)(3) organizations, ranging from charitable foundations to universities and churches.  These organizations must be approved by the Internal Revenue Service to be tax-exempt under the terms of section 501(c)(3) of the Internal Revenue Code.

Navy Musicians Association: The Navy Musicians Association (NMA) is a non-profit veterans organization of past and present United States Navy musicians.  The NMA was founded in 1995 and has become a 501 (c) (19) tax exempt veteran's organization under the U.S. Tax Code.

Distributed.net: distributed.net is a distributed computing effort that is attempting to solve large scale problems using otherwise idle CPU or GPU time.  It is governed by Distributed Computing Technologies, Incorporated (DCTI), a non-profit organization under U.S. tax code 501(c)(3).

International Council on Clean Transportation: The International Council on Clean Transportation (ICCT) is an independent nonprofit organization incorporated under Section 501(c)(3) of the US tax code.  It provides technical and scientific analysis to environmental regulators.  It is funded by the ClimateWorks Foundation, the William and Flora Hewlett Foundation, the Energy Foundation, and the David and Lucile Packard Foundation.

Supporting paragraphs: Bruce Lindsey Clinton Foundation
Answer: Clinton Foundation