In September 1919, President Woodrow Wilson had a debilitating stroke that he kept concealed for the final year-and-a-half of his presidency. Since then it has been generally understood that, while it is cruel and wrong to impugn a president's mental health as a way to make a cheap political point, it is valid to raise that question if there were genuine concern as to his psychological and/or physical fitness.

This brings us to Rep. Ted Lieu, D-California, who announced on Wednesday that he plans to introduce a bill requiring all presidents to receive medical treatment from licensed psychiatrists.

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It was a plan that he has foreshadowed on Twitter throughout the week, as he repeatedly expressed concern about the mental health of the Oval Office's current occupant.

Last 24 hrs on Twitter, @realDonaldTrump went on rant about "death & destruction," "FAKE NEWS," & "evil." Should he get mental health exam? — Ted Lieu (@tedlieu) February 4, 2017

Yes @tedlieu: I've suggested #Trump get independent evaluations since he announced candidacy including medical, psychiatric & psychological. https://t.co/O3GFdVnBhy — Jeffrey Guterman (@JeffreyGuterman) February 4, 2017

.@tedlieu on @MSNBC: "We know that #DonaldTrump lies pathologically... a disconnecting from the truth that is highly disturbing." https://t.co/TLDLWVGopP — Darren Shiroma (@DarrenShiroma) February 4, 2017

"I’m looking at it from the perspective of, if there are questions about the mental health of the president of the United States, what may be the best way to get the president treatment?" Lieu told The Huffington Post. "We’re now in the 21st century. Mental health is just as important as physical health."