3. Lewandowski was ousted as a peace offering to an angry GOP establishment. The Trump campaign’s increasingly fraught relationship with the Republican Party establishment, particularly the Republican National Committee and top elected leaders, is growing into a serious problem for his campaign. Trump ran as an outsider, in a campaign choreographed in large part by Lewandowski. He spent months attacking the establishment for “rigging” the primaries and delegate selection processes against him. Even after becoming the nominee, Trump’s attacks continued. As recently as Saturday, Trump continued to claim that he could win the election without the support of the GOP...