Democratic presidential candidate Sen. Bernie Sanders speaks to members of the media as his wife Jane looks on after an Oval Office meeting with President Barack Obama. June 9, 2016, in Washington, DC. Sanders met with President Obama after Hillary Clinton has clinched the Democratic nomination for president. (Photo by Alex Wong/Getty Images)

Earlier this week, even before Hillary Clinton’s primary victory in California assured her the Democratic presidential nomination, the Associated Press had already declared her the presumptive nominee. Bernie Sanders and his supporters were sore, and they had a right to be.

Although the AP defended its decision, saying that Clinton’s crossing the delegate threshold was news and they had an obligation to report it when they did (the…