Rex Tillerson shouldn’t have served as secretary of state.

He didn’t have the foreign policy chops one would expect in such a sensitive diplomatic post. However, he isn’t “dumb as a rock,” as the president has said in a tweet. Nor is he “lazy as hell.”

Tillerson is an accomplished Texas business mogul. He also was surrounded by a legal team at State that told him that Donald John “Stable Genius” Trump was making demands that violated the law.

So that’s what Tillerson said this week, incurring the Twitter wrath of the president.

Sigh. I hasten to add that if there is any dumbness to be found inside the Trump administration, I believe it can be seen in the man who runs the show. Seriously, man.

The nonsensical idiocy that flows from his Twitter account tells me that the president of the United States — the elected head of state — is deficient in (a) the use of the English language and (b) any sense of propriety for the high office to which he was elected.

He should refrain from calling anyone “dumb.”

However, he won’t.