In September 23, 1946, Robeson and a delegation representing the ACAL met with President Harry Truman to push for an anti-lynching agenda. Robeson demanded that Truman issue a public statement expressing his views on lynching and recommending a set of legislative and educational measures aimed at eradicating mob violence. Truman turned down these requests, claiming that timing and political circumstances made these measures difficult to implement at the moment. Robeson was disappointed by this and found it troubling that the US government was at the time willing to actively engage in the Nuremberg Trials while it turned its head from racial injustices at home.[5] Delegations also met with US Attorney General Tom Clark as well as the Democratic and Republican national committees. The delegation's program included the creation of a federal anti-lynching bill, arrest and punishment for all lynchers, and preventing Ku Klux Klan members from joining Congress.[6]
Many prominent intellectuals were members, including Albert Einstein.[7] Other notable supporters of the organization were Max Yergan, Joseph Curran, Canada Lee, Jack Kroll, Lena Horne, and Oscar Hammerstein II.[8] The Federal Bureau of Investigation (FBI) had been long concerned about socialist and communist movements for their instigation of social and labor unrest. Having noted communist support for African-American civil rights before World War II, the FBI characterized the "Crusade" as a "communist front." Robeson and the ACAP were thus both put under investigation by the FBI.[9] The FBI classified members such as Einstein as communist sympathizers; and developed intelligence files on them.
https://en.wikipedia.org/wiki/American_Crusade_Against_Lynch...
Regarding Franklin Delano Roosevelt (note I wrote whose husband):
https://www.aier.org/article/how-fdr-killed-federal-anti-lyn...
https://www.history.com/news/fdr-eleanor-roosevelt-anti-lync...
And the Ken Burns documentary on the Roosevelts if you have 6 hours to spare