This past April, I sent a letter to Sen. Bernie Sanders (I-VT) about a problem that has been troubling me for some time. Here’s the text:I have a question for you, as America’s most-recognized socialist, concerning places where socialism has worked out badly.

THE LEFT NEEDS A SOCIALISM LITMUS TEST

Over the past century, a number of countries have enthusiastically implemented what their leaders claim are the principles of socialism, and the long-run results have been disappointing. Two recent examples are Cuba and Venezuela. The rulers of these countries are world-famous for turning relatively prosperous economies into disasters from which their people flee in large numbers.

My question is this: What went wrong?

Please be specific in your reply. I would like to quote your answer in my study on ‘Why Socialism Fails.’