Nixon was bigoted against almost everyone. He was a profoundly introverted man in a profession which strongly favors extroverts. This made him not only bigoted - and we must remember that anti-Semitism was acceptable in the USA until WW II - but more than a bit paranoid. His primary concern was countering the Soviet Union and thus he supported Israel. It didn't matter that he hated Jews. He could use Jews, note Mr. Kissinger's position.
Iranian parliamentary panel gives conditional nod to nuke deal (Reuters)
from the article: ADL director: Nixon was a bigot, but a practical supporter of Israel