WASHINGTON – At last night’s White House state dinner honoring former D.C. Mayor Marion Barry, Vice President Biden managed to ignite a bit of a firestorm when he addressed the honoree and distinguished guests. After thanking Mayor Barry for his public service and congratulating him on his many accomplishments, the vice president strayed off-script and embarked on a bewildering oration that left some of the dinner guests uneasy and all of the guests confused. Mr. Biden’s discourse began to meander wildly when his subject matter shifted from Marion Barry to Mrs. Obama’s new haircut. “I’ve always been a big fan...