DAVID HARSANYI: Jimmy Carter Is Our Worst Ex-President. “Joe Scarborough is wrong. The world would have been a far better place had Carter left the stage.”

“Great men” do not, as Carter has his entire post-presidential life, use freelance diplomacy abroad to undermine elected American governments. They do not coddle and legitimize tyrants and murderers around the world. They do not undercut liberalism by allowing despots to use them as props. It is one thing to meet with detestable characters as president — diplomacy and American interests often dictate it — but it is quite another to ally yourself with them as a free man. Yet, that’s what Carter has done for 40 years.

Carter was the first, and only, ex-president to visit communist Cuba. “I look forward to this opportunity to meet with Cuban people from all walks of life and to talk with President Castro,” Carter claimed. While there, Carter would spin fantasies about Cuba’s “superb systems of health care and universal education,” while offering perfunctory attention to the hundreds of political prisoners who were, as he tossed around a baseball with Castro, being imprisoned and tortured.

Then again, there are few communist strongmen who haven’t sung Carter’s praises.

They know who their friends are.