Dear President George W. Bush, House Speaker Paul Ryan, Senator Majority Leader Mitch McConnell and Gov. Mitt Romney:
I am writing you in your role as the de facto leaders of your party. Gentleman, the Republic is in peril. Donald Trump poses a mortal danger not just to the Republican Party, but also to the American democratic experiment itself.
Imagine America in 1968 if George Wallace were leading in the polls. Or if Franklin Roosevelt in 1933 — at the depths of the Depression — had given way to the urging of prominent liberals like Walter Lippmann for “a mild species of dictatorship.”
This is not the normal hyperbole that both parties trot...