What did Donald Trump do today?

He forgot he's not a king.

A day after South Korea abandoned all subtlety and gifted him a golden crown, to good diplomatic effect, Trump posted this to his private microblogging website at 3:46 A.M. this morning:

Worked really hard, 24/7, took in Trillions of Dollars, and Chuck Schumer said trip was “a total dud,” even though he knows it was a spectacular success. Words like that are almost treasonous!!! 

It is not treason, or close to treason, to criticize Donald Trump. 

The Constitution of the United States defines treason explicitly, saying that it "shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort." 

But what Trump really means is that Sen. Schumer is guilty of a crime known as lèse-majesté: an insult to the dignity of the sovereign. If the term is unfamiliar, it's because it hasn't been used much in the last 300  years, and was never a crime in the United States. 

As for the factual basis of Sen. Schumer's claims, it's probably fair for Trump to feel that he's "worked really hard" by his standards: he spent a rare weekend away from the seclusion of a private golf resort. Overseas travel is clearly hard on Trump: even a healthy person can feel rundown by jet lag, and Trump suffered even more disorientation than usual as a result. 

But while other countries were making deals at the United States' expense, Trump had nothing to show for the trip other than handshake deals on "frameworks" for trade—of exactly the sort that Trump's own administration admits they can't enforce.

Why does this matter?

• It is not treason to criticize Donald Trump.