[3][2] Rosenberg became known as a labor mediator as early as high school, earning mention in the New York Times during a large student strike related to mandatory military training.

[5] Inspired by the older Moskowitz, Rosenberg opened a public- and labor relations firm while continuing to be involved in Democratic politics in New York City.

[3] In 1934, Nathan Straus, New York State regional director of the National Recovery Administration (NRA), selected Rosenberg as his assistant.

[citation needed] In the summer of 1941, President Roosevelt enlisted Rosenberg's help addressing the calls of civil rights activist A. Philip Randolph to end the systematic exclusion of Black Americans from the U.S. defense industry.

Working with Randolph and New York City Mayor Fiorello La Guardia, Rosenberg helped formulate what would become Executive Order 8802 and its enforcement mechanism the Fair Employment Practice Committee (FEPC), which prohibited ethnic or racial discrimination in America's defense industry.

"[10] By 1941, Rosenberg was serving as New York regional director of the Social Security Board and War Power Commission and in the Office of Defense Health and Welfare Services, earning her the nickname "Seven-Job Anna.

While with the War Manpower Commission, Rosenberg developed the "Buffalo Plan," which solved multiple problems bedeviling wartime defense manufacturing.

When he honored Anna Rosenberg as the first-ever recipient of the Medal of Freedom in October 1945, President Harry S. Truman said that without the Buffalo Plan, the "necessary manpower for war production would not have been attained.

"[9] In August 1944, when President Franklin D. Roosevelt sent Rosenberg to Europe to report on the needs of American soldiers after their demobilization, she recommended education and supported the G.I.

[2] On a second wartime mission at FDR's request, Anna Rosenberg became one of the first Allied women to enter a liberated concentration camp, when she bore witness to the horrors of Nordhausen.

After Rosenberg was nominated on November 9, Freedman mailed 25,000 copies of the antisemitic newspaper Common Sense, edited by Conde McGinley, to all the names in the Congressional directory.

[15] Also while in the position, Rosenberg worked to implement the National Security Act, promoted racial integration of the services, and supported legislation that safeguarded the rights of minorities in the military.

[2] Often called a confidante of FDR, Anna Rosenberg was the top woman in the Truman administration; she was a close personal friend to Dwight D. Eisenhower and helped him pivot from the military to politics; she organized the 1962 birthday gala for President John F. Kennedy (made famous by Marilyn Monroe's rendition of "Happy Birthday"); and she counseled her friend Lyndon B. Johnson on issues ranging from the effect of automation on jobs to a more equitable formula for the Vietnam War draft.