Anthony Clark writes: “For months, as the end of Donald Trump’s term approached, historians and journalists have been playing a speculation game: What will Donald Trump’s presidential library be like? ‘A shrine to his ego,’ predicted a historian in the Washington Post. Others imagine a theme park, or a ‘full MAGA’ exercise in rebranding his presidency. One report said he’s trying to raise an astonishing $2 billion to build it. Here’s another, more likely possibility: There won’t be one.”