Washington—Senator Dianne Feinstein (D-Calif.) today called on President Trump to close the prison at Guantanamo: “It was 16 years ago today that the first detainees arrived at the Guantanamo Bay detention facility. Since then, 780 detainees have been held there. I have called on both the Obama and Bush administrations to remove and transfer all detainees and close the facility, and hundreds of detainees have been transferred or released. Today, 41 detainees remain, five of whom have been cleared for transfer to other countries and 36 who remain in legal limbo. “This prison has cost taxpayers more than $5 billion,...