Any sovereign nation has the right to exclude any individual who might be considered to be a threat to that country ("Don't let Israel discriminate," April 30). Keeping its citizenry safe is a primary requirement of any country, including the U.S., as well as many other nations that do not accept another country's passport as an automatic granting of entry.
Anyone who has indulged in foreign travel knows that a U.S. passport is not sufficient for visiting a country with many nations requiring a visa issued by that nation. The U.S. has similar concerns but to a lesser degree than Israel which has been subject to numerous terror attacks during its 65-year existence.
Nelson Marans, Silver Spring