List of ambassadors of the United States to Mexico
List of ambassadors
Table:
Ambassador

Presentation

Termination

Appointed by

Powell Clayton

January 3, 1899

May 26, 1905

William McKinley

Edwin H. Conger

June 15, 1905

August 3, 1905

Theodore Roosevelt

David Eugene Thompson

March 8, 1906

December 1, 1909

Henry Lane Wilson

March 5, 1910

February 18, 1913

William Howard Taft

Henry P. Fletcher

March 3, 1917

January 25, 1919

Woodrow Wilson

Charles B. Warren

March 31, 1924

July 22, 1924

Calvin Coolidge

James R. Sheffield

October 15, 1924

June 5, 1927

Dwight Morrow

October 29, 1927

September 17, 1930

J. Reuben Clark

November 28, 1930

February 14, 1933

Herbert Hoover

Josephus Daniels

April 24, 1933

November 9, 1941

Franklin D. Roosevelt

George S. Messersmith

February 24, 1942

May 15, 1946

Walter C. Thurston

June 17, 1946

November 4, 1950

Harry S. Truman

William O'Dwyer

November 23, 1950

December 6, 1952

Francis White

April 28, 1953

June 30, 1957

Dwight D. Eisenhower

Robert C. Hill

July 25, 1957

December 1, 1960

Thomas C. Mann

May 8, 1961

December 22, 1963

John F. Kennedy

Fulton Freeman

April 6, 1964

January 6, 1969

Lyndon B. Johnson

Robert H. McBride

July 22, 1969

January 25, 1974

Richard Nixon

Joseph J. Jova

January 30, 1974

February 21, 1977

Patrick Joseph Lucey

July 19, 1977

October 31, 1979

Jimmy Carter

Julian Nava

May 7, 1980

April 3, 1981

John Gavin

June 5, 1981

June 10, 1986

Ronald Reagan

Charles J. Pilliod Jr.

November 4, 1986

April 7, 1989

John Negroponte

July 3, 1989

September 5, 1993

George H. W. Bush

James R. Jones

September 10, 1993

June 25, 1997

Bill Clinton

Jeffrey Davidow

August 5, 1998

September 14, 2002

Tony Garza

November 22, 2002

January 20, 2009

George W. Bush

Carlos Pascual

August 9, 2009

March 19, 2011

Barack Obama

Earl Anthony Wayne

August 2, 2011

July 31, 2015

Roberta S. Jacobson

June 20, 2016

May 5, 2018

William H. Duncan

2018

Donald Trump

Looking at the data table for 'List of ambassadors of the United States to Mexico' (see 'List of ambassadors'), formulate a single-sentence overview of the highlighted cells and provide it inside the JSON object {"answer": "YOUR ANSWER"}.