Toggle navigation menu.
DC Capitol Angled Staff Background 1500x770

Ambassador David T. Killion, Chief of Staff

Ambassador David T. Killion, Chief of Staff at the U.S. Commission on Security and Cooperation in Europe (U.S. Helsinki Commission), was jointly appointed on April 10, 2014, by the then-Chairman of the U.S. Helsinki Commission U.S. Senator Ben Cardin and Ranking Member Senator Roger Wicker.

A seasoned diplomat as well as a Capitol Hill veteran, Killion most recently served as the U.S. Permanent Representative to the United Nations Educational, Scientific and Cultural Organization (UNESCO) from 2009-2013. As Ambassador he administered a multi-agency, multi-million dollar U.S. Mission, worked to better align UNESCO programs and activities with U.S. strategic interests, and managed complex political and diplomatic challenges. In particular, Killion promoted U.S. goals in the areas of freedom of expression and science diplomacy, advancing opportunities for girls’ education and defending internet freedom. He also was credited with fostering relationships with civil society and the private sector as key partners in achieving U.S. objectives at UNESCO.

From 2001 until 2009, Killion served as a Senior Professional Staff Member for the U.S. House Committee on Foreign Affairs. Killion was the Committee’s expert on State Department Operations, International Organizations, and International Education. While there, he managed the State Department Authorization bill for Committee Chairman Howard Berman (D-Calif.) and coordinated Committee initiatives to improve management at the United Nations and implement reforms to UN human rights mechanisms. Killion also worked on enacted legislation such as the Global Anti-Semitism Review Act of 2004 which created a Department of State Special Envoy to Combat anti-Semitism. He also helped draft and shepherd through the House H.R. 1469, the Senator Paul Simon Study Abroad Foundation Act, which was designed to increase the number of American college students studying abroad. In 2009, in recognition of this work, NAFSA, the Association of International Educators awarded Killion its Congressional Staff Champion Award “for his commitment to advancing international education.”

Prior to serving on the Foreign Affairs Committee, Killion served as a Senior Legislative Management Officer in the Department of State’s Bureau of Legislative Affairs (1996-2001) under the Clinton administration. His areas of responsibility managing congressional relations included human rights, democracy, war crimes, women’s issues, oceans, and environment and science. From 1994 to 1996, he served as a legislative assistant to Congressman David Skaggs (D-Colo.).

Ambassador Killion holds a BA from Wesleyan University in Middletown, Conn., and an MA from the University of California at Los Angeles.

Category
Country
Issue
Date
Filter Topics Open Close
In the News

Bipartisan House members push Biden to allow Poland ...

Oct 30, 2024

In the News

US Weighs NATO Ally’s Offer To Shoot Down Russ...

Nov 01, 2024

screen-reader-text
In the News

Bipartisan report urges rethink of America’s Russia ...

Sep 28, 2024

screen-reader-text
In the News

Wilson Talks Russia Strategy

Oct 02, 2024

screen-reader-text
Press Releases

Chairman Wilson Issues Statement on Government Raids...

Oct 25, 2024

WASHINGTON—Today, US Helsinki Commission Chairman Joe Wilson (SC-02), issued the following statement regarding the government raids on the homes of the two Tbilisi, Georgia-based researchers with the US-based Atlantic Council: “It […]

screen-reader-text
Press Releases

BRIEFING—Nuclear Power and Nuclear Powers: Lessons f...

Mar 16, 2026

Cannon House Office Building, Room 360 Stream live here Control and operation of Europe’s largest nuclear power plant, the Zaporizhzhia Nuclear Power Plant (ZNPP), has become a key inflection point […]

screen-reader-text
Press Releases

Chairman Wicker Welcomes Nomination of Darrell Owens...

Mar 10, 2026

 WASHINGTON—Senator Roger Wicker, R-Miss., Chairman of the U.S. Helsinki Commission, today welcomed President Trump’s nomination of Darrell Owens as the U.S. ambassador to the Organization on Security and Cooperation in […]

screen-reader-text
Press Releases

HEARING—Responding to China’s Infiltration and Coerc...

Mar 04, 2026

Rayburn House Office Building, Room 2247 Stream live here While U.S. allies in Europe have spent the past several years prioritizing responding to Russia’s aggression, they have allowed another authoritarian […]

screen-reader-text
Hearings

Responding to China’s Infiltration and Coercion in E...

Mar 04, 2026

While U.S. allies in Europe have spent the past several years prioritizing responding to Russia’s aggression, they have allowed another authoritarian power to take hold in key economic sectors, public […]

screen-reader-text
Press Releases

Helsinki Commission and Ukraine Caucus Leadership Ma...

Feb 24, 2026

WASHINGTON—Senators Roger Wicker (R-Miss.), Sheldon Whitehouse (D-RI), and Dick Durbin, (D-Ill.), and Representatives Joe Wilson (R-SC), Steve Cohen (D-TN), Marcy Kaptur (D-Ohio), Brian Fitzpatrick (R-PA), and Mike Quigley (D-Ill.), leaders […]

screen-reader-text
Press Releases

BRIEFING—Georgian Dream’s Escalating Crackdown on Di...

Feb 11, 2026

Rayburn House Office Building, Room 2358-A Streaming live here Since October 2024, Georgian Dream, Georgia’s ruling party, has plunged the country into its worst human rights crisis since independence. They […]

screen-reader-text
Briefings

Georgian Dream’s Escalating Crackdown on Dissent

Feb 11, 2026

Since October 2024, Georgian Dream, Georgia’s ruling party, has plunged the country into its worst human rights crisis since independence. They have passed more than 20 new laws that expand […]

screen-reader-text
Press Releases

Ranking Member Cohen Condemns Sentencing of Hong Kon...

Feb 09, 2026

WASHINGTON—Congressman Steve Cohen (TN-9), the Organization for Security and Cooperation in Europe Parliamentary Assembly’s Special Representative on Political Prisoners, strongly condemns the 20-year prison sentence handed to media tycoon and […]

screen-reader-text
Press Releases

Bipartisan Helsinki Commission Leadership Urge Depar...

Feb 06, 2026

WASHINGTON—Today, U.S. Helsinki Commission Chairman Senator Roger Wicker (MS), Co-Chairman Representative Joe Wilson (SC-02), Ranking Member Senator Sheldon Whitehouse (RI), and Ranking Member Representative Steve Cohen (TN-09) and nine other […]

screen-reader-text
Press Releases

HEARING—Securing Syria’s Transformation by Diminishi...

Feb 03, 2026

Cannon House Office Building, Room 360 Stream live here With the fall of Bashar al-Assad, Syria and its partners have a historic opportunity to degrade Russia’s ability to project force across […]

screen-reader-text
Hearings

Securing Syria’s Transformation by Diminishing Russi...

Feb 03, 2026

With the fall of Bashar al-Assad, Syria and its partners have a historic opportunity to degrade Russia’s ability to project force across the Mediterranean, the Middle East, and Africa. Syria […]

screen-reader-text
Press Releases

Bipartisan Helsinki Commission Leadership Ask Admini...

Jan 15, 2026

WASHINGTON—Today, U.S. Helsinki Commission Chairman Senator Roger Wicker (MS), Co-Chairman Representative Joe Wilson (SC-02), Ranking Member Senator Sheldon Whitehouse (RI), and Ranking Member Representative Steve Cohen (TN-09) sent a letter […]

screen-reader-text