Just as negotiators reached agreement on an extraordinary hearing for Brett Kavanaugh and his accuser, a second allegation of sexual misconduct by the Supreme Court nominee put the White House and Senate Republicans on the defensive and fueled calls from Democrats to postpone further action on his confirmation. A dayslong back and forth over the timing and terms of a hearing with Kavanaugh and Christine Blasey Ford, the woman accusing him of sexually assaulting her when they were teenagers, appeared to end Sunday with the announcement that they would appear separately Thursday before the Senate Judiciary Committee. The hearing promised...