Amid a flurry of news earlier this week on the newly announced slate of presidential debates, independent candidate Robert F. Kennedy Jr. pulled a Trumpian move by preemptively declaring he will meet the standards and qualify to appear. He also accused his opponents of “colluding” to keep him off the debate stage. But if Kennedy can actually make the debates, it could open a can of brain worms for President Joe Biden and former President Donald Trump. “The problem with RFK is he’s a wild...