Even some of Donald Trump’s own supporters have admitted they are underwhelmed by the president’s self-hyped Great American State Fair in D.C. Trump’s 16-day spectacle on the National Mall, which opened on June 25, was intended to showcase all 50 states as the centerpiece of the Trump administration’s celebration of America’s 250th anniversary. But several states led by Democratic governors have boycotted the event, while others have opted out due to the high cost to taxpayers or have not been able to secure businesses willing to sponsor a booth. Several musicians also pulled out of planned performances over concerns that...