If you believe recent media accounts, the former Democratic president has suddenly transcended the political fray. It’s as if a newly “Zen-like” Barack Obama is content to just write his memoir and let Donald Trump and Republicans write the next chapter of history. In a cover story asking “Where is Barack Obama?” for example, New York magazine concluded that the 44th president has “virtually disappeared” from the political scene and is sitting idly by as his legacy is dismantled piece by piece. From an exclusive interview, the periodical concluded Obama was “modeling his political engagement out of office after George...