| Time Served | President | Ambassador | % Correct |
|---|---|---|---|
| January 23, 1961 - July 14, 1965 | John F. Kennedy, Lyndon B. Johnson | Adlai Stevenson II | 100%
|
| (Acting) December 31, 2006 - April 30, 2007 | George W. Bush | Alejandro Daniel Wolff | 100%
|
| April 30, 2007 - January 22, 2009 | George W. Bush, Barack Obama | Alejandro Daniel Wolff | 100%
|
| January 30, 1977 - September 23, 1979 | Jimmy Carter | Andrew Young | 100%
|
| (Acting) January 20, 2005 - August 2, 2005 | George W. Bush | Anne W. Patterson | 100%
|
| July 28, 1965 - June 24, 1968 | Lyndon B. Johnson | Arthur Goldberg | 100%
|
| January 21, 1997 - August 18, 1998 | Bill Clinton | Bill Richardson | 100%
|
| January 23, 1969 - February 25, 1971 | Richard Nixon | Charles W. Yost | 100%
|
| June 30, 1975 - February 2, 1976 | Gerald Ford | Daniel Patrick Moynihan | 100%
|
| September 23, 1979 - January 20, 1981 | Jimmy Carter | Donald McHenry | 100%
|
| January 20, 2025 - September 21, 2025 | Donald Trump | Dorothea Shea | 100%
|
| May 12, 1992 - January 27, 1993 | George H.W. Bush, Bill Clinton | Edward J. Perkins | 100%
|
| January 17, 1946 - June 3, 1946 | Harry Truman | Edward Stettinius Jr. | 100%
|
| June 26, 1968 - September 25, 1968 | Lyndon B. Johnson | George Ball | 100%
|
| March 1, 1971 - January 18, 1973 | Richard Nixon | George H.W. Bush | 100%
|
| January 27, 1953 - September 3, 1960 | Dwight D. Eisenhower | Henry Cabot Lodge Jr. | 100%
|
| (Acting) June 3, 1946 - January 14, 1947 | Harry Truman | Herschel Johnson | 100%
|
| (Acting) January 20, 2001 - September 19, 2001 | George W. Bush | James B. Cunningham | 100%
|
| September 8, 1960 - January 21, 1961 | Dwight D. Eisenhower | James Jeremiah Wadsworth | 100%
|
| October 7, 1968 - January 20, 1969 | Lyndon B. Johnson | James Russell Wiggins | 100%
|
| February 4, 1981 - April 1, 1985 | Ronald Reagan | Jeane Kirkpatrick | 100%
|
| February 20, 1973 - June 29, 1975 | Richard Nixon, Gerald Ford | John A. Scali | 100%
|
| August 2, 2005 - December 31, 2006 | George W. Bush | John Bolton | 100%
|
| July 23, 2004 - January 20, 2005 | George W. Bush | John Danforth | 100%
|
| September 19, 2001 - July 23, 2004 | George W. Bush | John Negroponte | 100%
|
| (Acting) January 1, 2019 - September 12, 2019 | Donald Trump | Jonathan R. Cohen | 100%
|
| September 12, 2019 - January 20, 2021 | Donald Trump | Kelly Craft | 100%
|
| February 25, 2021 - January 20, 2025 | Joe Biden | Linda Thomas-Greenfield | 100%
|
| January 27, 1993 - January 21, 1997 | Bill Clinton | Madeleine Albright | 100%
|
| (Acting) January 20, 2017 - January 27, 2017 | Donald Trump | Michele J. Sison | 100%
|
| September 21, 2025 - Present | Donald Trump | Mike Waltz | 100%
|
| January 27, 2017 - December 31, 2018 | Donald Trump | Nikki Haley | 100%
|
| (Acting) August 18, 1998 - September 7, 1999 | Bill Clinton | Peter Burleigh | 100%
|
| September 7, 1999 - January 20, 2001 | Bill Clinton | Peter Burleigh | 100%
|
| (Acting) January 20, 2021 - February 25, 2021 | Joe Biden | Richard M. Mills Jr. | 100%
|
| (Acting) June 30, 2013 - August 5, 2013 | Barack Obama | Rosemary DiCarlo | 100%
|
| August 5, 2013 - January 20, 2017 | Barack Obama | Samantha Power | 100%
|
| January 26, 2009 - June 30, 2013 | Barack Obama | Susan Rice | 100%
|
| March 20, 1989 - May 7, 1992 | George H.W. Bush | Thomas R. Pickering | 100%
|
| May 22, 1985 - March 15, 1989 | Ronald Reagan | Vernon A. Walters | 100%
|
| January 14, 1947 - January 22, 1953 | Harry Truman | Warren Austin | 100%
|
| March 15, 1976 - January 19, 1977 | Gerald Ford | January 19, 1977 | 0%
|