Signers include the umbrella bodies for federations and Jewish community relations councils, as well as Reform and Reconstructionist groups and major Jewish defense groups.
Senators called on the Trump administration to improve hate crimes reporting and to set up an interagency task force while continuing preparedness programs.
The Reform movement and the Anti-Defamation League also have been outspoken in recent months in backing what has been U.S. policy for 15 years until the new president's retreat.