Kate Rebholz
Chargé d’Affaires a.i.
Dave Haugen
Acting Deputy Chief of Mission
Kate Rebholz
Chargé d’Affaires a.i.
Kate Rebholz joined the U.S. Mission to the OSCE as the Deputy Chief of Mission (DCM) in August of 2025 and has been serving as Chargé d’Affaires a.i. since January 2026. A career member of the Senior Foreign Service, Ms. Rebholz has served in a combination of State Department domestic and overseas assignments.
Dave Haugen
Acting Deputy Chief of Mission
Dave Haugen joined the U.S. Mission to the Organization for Security and Cooperation in Europe (OSCE) as Chief Arms Control Delegate in August 2025 and has been serving as Acting Deputy Chief of Mission since January 2025.
Kate Rebholz
Chargé d’Affaires a.i.
Dave Haugen
Acting Deputy Chief of Mission
Donald J. Trump
President of the United States
JD Vance
Vice President of the United States
Marco Rubio
U.S. Secretary of State
President of the United States
Donald J. Trump serves as the 47th President of the United States. He also served as the 45th.
Vice President of the United States
JD Vance serves as the 50th Vice President of the United States.
U.S. Secretary of State
Marco Rubio serves as the 72nd United States Secretary of State.
Donald J. Trump
President of the United States
Donald J. Trump
President of the United States
Donald J. Trump serves as the 47th President of the United States. He also served as the 45th.
JD Vance
Vice President of the United States
JD Vance
Vice President of the United States
JD Vance serves as the 50th Vice President of the United States.
Marco Rubio
U.S. Secretary of State
Marco Rubio
U.S. Secretary of State
Marco Rubio serves as the 72nd United States Secretary of State.


