Except Israeli is a legal citizenship not a skin color.
The Civil Rights Act of 1964 prohibits discrimination on the basis of race, color, religion, sex or national origin.
You cannot discriminate against an Israeli on the basis of either. You can discriminate against Israel as a state.
> A part of the Immigration and Nationality Act, found at 8 U.S.C. section 1324b, prohibits employers from discriminating against individuals based on their citizenship or immigration status, or their national origin, during the hiring, firing, recruiting, Form I-9, or E-Verify processes.
> Employers cannot discriminate against individuals when hiring, firing, or recruiting based on the individual’s place of birth, country of origin, ancestry, native language, accent, or because they are perceived as looking or sounding “foreign.”
> Employers cannot discriminate against individuals when hiring, firing, or recruiting because the individuals are or are not U.S. citizens, or because of their immigration status or type of employment authorization. U.S. citizens, noncitizen nationals, asylees, refugees, and recent permanent residents are protected from this type of discrimination.
There are exceptions if you're, say, working on ICBMs.