Time for a closer look!

President Trump, whose erratic behavior has generated debate about his mental health, declared on Saturday that he was perfectly sane.

In a series of abnormal Twitter posts, Mr. Trump insisted that the news media was attacking his capacity because they [the media] conspired with Russia.

Now that Russian collusion has proven to be a total hoax, the Democrats and their lapdogs, the Fake News Mainstream Media, are screaming mental stability and intelligence he wrote on Twitter.

“Actually, throughout my life, my two greatest assets have been mental stability and being, like, really smart…” “I think that would qualify as not smart, but genius....and a very stable genius at that!”

The president’s engagement on the issue has roiled the political and psychiatric worlds and thrust the country into uncharted territory.

Democrats in Congress have introduced legislation to force the president to submit to psychological evaluation.

Mental health professionals have signed a petition calling for his removal from office.

After the president boasted that his “nuclear button” was bigger than Kim Jong-un’s in North Korea, Richard W. Painter, a former adviser to President George W. Bush, described the claim as proof that Mr. Trump is “psychologically unfit” and should have his powers transferred to Vice President Mike Pence under the Constitution’s 25th Amendment.

Mr. Trump’s self-absorption, impulsiveness, lack of empathy, obsessive focus on slights, tenuous grasp of facts and penchant for far-fetched conspiracy theories have generated discussions and speculation.

“The level of concern by the public is now enormous,” said Bandy X. Lee, a forensic psychiatrist at Yale School of Medicine and editor of “The Dangerous Case of Donald Trump: 27 Psychiatrists and Mental Health Experts Assess a President,” a book released last fall. “They’re telling us to speak more loudly and clearly and not to stop until something is done because they are terrified.”

Dr. Lee was invited to Capitol Hill last month to meet with about a dozen members of Congress to discuss the matter. Republicans have raised concerns in private.

Few questions irritate White House aides more than inquiries about the president’s mental well-being.

“This shouldn’t be dignified with a response,” said Kellyanne Conway, the White House counselor.

Thomas J. Barrack, a friend of Mr. Trump’s, was quoted in Michael Wolff’s new book, “Fire and Fury: Inside the Trump White House,” as telling a friend that the president was “not only crazy but stupid.”

In private, advisers to the president have also expressed concerns.

Mr. Trump is due for his annual physical examination on Friday, but the White House would not say whether it would include mental acuity tests.

Dr. Frances, author of “Twilight of American Sanity: A Psychiatrist Analyzes the Age of Trump,” said the president’s bad behavior should not be blamed on mental illness. “He is definitely unstable,” Dr. Frances said. “He is definitely impulsive. He is world-class narcissistic not just for our day but for the ages. You can’t say enough about how incompetent and unqualified he is to be leader of the free world.”

Richard M. Nixon took Valium, and during his final days advisers took precautions to avoid any rash orders for military action.

Late in his tenure, Ronald Reagan’s aides, concerned enough about his mental state, discussed whether to invoke the 25th Amendment. Mr. Reagan was diagnosed with Alzheimer’s disease.

Public discussion of mental issues have long been a political liability. Senator Thomas F. Eagleton withdrew as the Democrats’ vice-presidential candidate in 1972 after revelations that he had undergone electric shock therapy. Gov. Michael S. Dukakis, the Democratic presidential nominee in 1988, was forced to release records to dispute "dirty trick" rumors that he had also received psychiatric treatment.

Mr. Trump’s diminished capacity has been discussed openly since before the 2016 campaign. Senator Rand Paul of Kentucky called him a “delusional narcissist.”

Senator Lindsey Graham of South Carolina, another Republican, said: “I think he’s a kook. I think he’s crazy. I think he’s unfit for office.”

Senator Bob Corker of Tennessee, said Mr. Trump had yet to “demonstrate the stability” required of a president.

For his part, Trump has accused his critics of being mentally impaired. He regularly describes adversaries with words like “crazy,” “psycho” and “nut job.”

Fifty-seven House Democrats have sponsored a bill to form an oversight commission on presidential capacity. The 25th Amendment, ratified in 1967, permits a president’s powers to be transferred to the vice president when the vice president and a majority of the cabinet or a body created by Congress conclude that the president is incapable of performing his duties.

“The 25th Amendment was passed in the nuclear age, and we have to keep faith with its central premise, which is there is a difference between capacity in a president and incapacity,” said Mr. Raskin. “We haven’t been forced to look at that question seriously before and now we are [forced to look].”

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