I wonder whether what you're recalling was the battle waged against Einstein by the Woman Patriot Corporation.
The "corporation" was anti-suffragette in character, possibly anti-Jewish and certainly anti-communist and anti-pacifist.
In 1932 the organisation filed a memorandum complaining about Einstein's return to the United States. They claimed, according to Einstein on Politics: His Private Thoughts And Public Stands on Nationalism, Zionism, War, Peace, and the Bomb edited by David E. Rowe, Robert J. Schulmann:
Einstein was not merely a pernicious influence; he was the ringleader of an anarcho-communist program whose aim was to shatter the military machinery of national governments as a preliminary for world revolution.
The Jewish Telegraph archive has a report of the battle here:
Einstein's archive is not available online but a search of the archive for "Woman Patriot Corporation" lists a number of documents which attest to the nature of the battle:
Their rather hysterical list of complaints against Einstein however do not seem to have included his treatment of his wife.
For details of the history of this strange organisation and their opposition to women's suffrage see Votes for Women: The Struggle for Suffrage Revisited edited by Jean H. Baker (p.125) and also this Britannica link.