Democratic congressman Rep. Ted Lieu blasted President Donald Trump on Twitter Saturday over tweets Trump recently made, suggesting the new president undergo a "mental health exam."

Lieu, whose congressional district includes West Los Angeles, chastised Trump as the "so-called president" — the same insult Trump gave the judge who essentially overturned his recent executive order on immigration late Friday — while making the claim that Trump needs a mental health exam.

"Last 24 hrs on Twitter, @realDonaldTrump went on rant about "death & destruction," "FAKE NEWS," & "evil." Should he get mental health exam?" Lieu tweeted Saturday morning.

"Pleased that this #saturdaymorning, @DHSgov will follow the Constitution rather than our So-called President," he wrote in a separate tweet, linking to an article about the Department of Homeland Security suspending implementation of Trump's order.

Later Saturday afternoon, Lieu again went after Trump, this time in response to another tweet Trump made Saturday when the president simply tweeted his campaign slogan: "Make America Great Again."

"Uh-oh, even @realDonaldTrump can't figure out how to defend his crazy actions. He's now just shouting campaign slogans," Lieu wrote with the hashtag "#SoCalledPresident."

While Trump certainly has his opposition, some of the rhetoric coming from Democrats since Trump won election last November and since he was inaugurated last month has been deafening, as it's typically unprecedented to question the mental health of a sitting U.S. president so openly.

Lieu is currently serving his second term as a California congressman.