US State Department: Israeli occupation forces severely restrict or ban from entering Israel and the West Bank people they suspect of being of Arab, Middle Eastern, or Muslim racial or religious background. People suspected of being of Arab, Middle Eastern, or Muslim background also face special intensive interrogation by Israeli occupation forces at the borders into Israel and the West Bank.
US Consulate in Jerusalem: Israeli occupation forces ban U.S. citizens with Palestinian nationality (or even, in some cases, the claim to Palestinian nationality) from entering Israel through Israel’s main international airport. Israeli occupation forces will often split up families in order to carry out these travel bans.
There is no “Israeli” nationality recognised in Israeli law, instead citizens are required to be classified according to racial or religious grouping assigned by the state of Israel such as “Jewish”, “Arab” or “Druz” and carry an identity card carrying this racial or religious classification. This has been recently reaffirmed by the Israeli Supreme Court in 2013 which ruled that residents of Israeli cannot legally identify themselves as “Israelis” because this would affect the country’s fundamental Jewish character but must be defined along racial-religious lines. The court’s justification included that “the constitutional Jewish-ness of the state negates any judicial option to recognize an ‘Israeli nationality’ which supposedly is separated from the ‘Jewish nationality'”. The case and further coverage of are listed in Note 1 and Note 2 here.
Likewise, the Israeli Supreme Courtrejected an application to register an Israeli citizen “by virtue of residency”, instead upholding “Citizenship by virtue of the Right of Return”, a privilege set aside for only Jewish people in Israeli law to automatically qualify for citizenship and all the associated legal and financial benefits in Israel. The court justified its decision saying that “Clearly the intention of the Law of Return was a matter of principal, and its reason is the linkage between Jews and the Land of Israel,” and that “this court cannot be expected to erode [the state of Israel’s] essence and its character”.