WASHINGTON—Foreign students coming from Europe, along with some au pairs and family members of visa holders in the U.S., are exempt from the Trump administration’s various travel bans imposed during the coronavirus pandemic, according to a memo the State Department sent to Congress on Thursday. The Trump administration has said that the array of travel and visa restrictions enacted since January were intended to slow the spread of the virus and block classes of foreign workers to open jobs for unemployed Americans. The restrictions affected China, Europe and Brazil, and people holding a range of visas, including the prized H-1B for high-skilled workers. According to the memo, students in European countries who already have visas to study in the U.S., but were blocked by the March travel ban, will be able to come to the U.S. for classes in the fall. Students who can get a visa can also come.