I knew a Jewish American who worked for a major defense contractor and he traveled to Saudi Arabia, Israel, UAE, Kuwait, Germany all the time. At that time the Israelis would actually provide him with a stamped insert for his passport that could be removed for travel to countries that restricted visitors who had traveled to Israel.
BTW, the Saudis were perfectly aware of his ethnicity and travels to Israel and never made an issue out of it. It just part and parcel of the hypocrisy of life in the Middle East. One place in the world he did encounter overt antisemitism was Germany, where a bartender told him Hitler didn’t finish the job. He told the bartender he was one of the ones Hitler missed. (I used to speak fair German and I would hear the same shit from Germans occasionally.)
I have heard the same from Americans. It is probably the most common bigotry I’ve ever encountered (and I am not Jewish, though people sometimes think I am).