Professor Michael McConnell weighs in on a recent letter sent by members of the GOP to Iran and how the Logan Act applys to it in this Washington Post article. 

Secretary of State John Kerry said a number of things Sunday about the letter to leaders of Iran signed by Sen. Tom Cotton (R-Ark.) and 46 other GOP senators. Appearing on CBS's “Face the Nation,” Kerry said it was “unprecedented,” “directly calculated to interfere,” and an “unconstitutional, un-thought-out action.”

Directly calculated to interfere? Yes. Un-thought-out? Depends whom you ask. Unprecedented? That's been discussed.

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As our own Philip Bump wrote last week about the Logan Act:

But it seems that no one has ever been tried for a violation of the law. “Historically, it has been threatened but never used,” (Stanford University professor and former federal judge Michael) McConnell said. “There have been various threats of enforcement over the years, but it's never been enforced.” The law has been “frequently violated,” he added, “but never enforced.”