“to clarify how Federal civil rights laws apply when antisemitic discrimination arises in HHS-funded programs and activities”
Note the last paragraph, where it mentions who this letter is addressed to.
From the HHS website:
OCR Dear Colleague Letter on Civil Rights Protections Against Antisemitic Discrimination
Re: Combating Discrimination Rooted in Antisemitism in HHS-Funded Programs and Activities
Dear Colleagues:
The U.S. Department of Health and Human Services (HHS), Office for Civil Rights (OCR), issues this letter to clarify how Federal civil rights laws apply when antisemitic discrimination1 arises in HHS-funded programs and activities.2 Recipients of HHS Federal financial assistance must administer their programs and activities without discrimination based on race, color, or national origin. That obligation applies pursuant to Title VI of the Civil Rights Act of 1964 (Title VI) and, in covered health programs and activities, Section 1557 of the Affordable Care Act (Section 1557).
Title VI provides that “[n]o person in the United States shall, on the ground of race, color, or national origin, be excluded from participation in, be denied the benefits of, or be subjected to discrimination under any program or activity receiving Federal financial assistance.”3 Section 1557 separately prohibits discrimination in covered health programs and activities on grounds prohibited by Title VI and other enumerated civil rights statutes.4 Antisemitic conduct may violate Title VI or Section 1557 when the facts establish discrimination on a protected ground, including actual or perceived Jewish ancestry or ethnic characteristics, Israeli national origin, or another protected ground.5