On Monday, the Supreme Court ruled that the third version of President Trump’s travel ban can go into effect while legal challenges are still ongoing in Courts of Appeals. The ban may be enforced immediately. It affects eight nations of which six are predominantly Muslim: Chad, Iran, Libya, North Korea, Somalia, Syria, Venezuela and Yemen. The former exception for people with “a bona fide relationship with a person or entity in the United States” no longer applies. Other exceptions and waivers may apply, e.g. for U.S. lawful permanent residents, dual nationals traveling on a passport from a non-restricted country or foreign nationals who hold a valid U.S. visa. The new restrictions are in place indefinitely, however, countries may be removed from the list upon meeting certain criteria.