WASHINGTON — House Speaker Paul D. Ryan, facing a revolt among conservative and moderate Republicans, rushed to the White House Friday afternoon to inform President Trump he did not have the votes to pass legislation to repeal the Affordable Care Act and to decide whether to pull the bill from consideration. The president and the speaker faced the humiliating prospect of a major defeat on legislation promised for seven years, since the landmark health legislation was signed into law. President Trump had demanded a vote regardless, which has been scheduled for Friday afternoon. But House leaders were leaning against such...