Justice Alito showing no signs of retiring. Photo: Jay Janner/Austin American-Statesman/Getty Images When the current U.S. Supreme Court terms ends it may be remembered as a moment when an otherwise subservient conservative majority finally drew a line by denying the Trump administration’s bid to end “birthright citizenship.” If that case goes as expected, the president’s outspokenly nativist policy chief, Stephen Miller, may weep bitter tears over his hopes of radically restricting legal immigration being dashed. In the meantime, the six conservative justices are giving the administration important, if less sweeping, wins on several immigrations cases. One came earlier this week...