A reckless and undignified spectacle (Guardian Editorial)

... Mr Bannon’s view is that Mr Trump is not likely to make it to the end of his first term. Either the president is brought down by the "treasonous" and "unpatriotic" meetings held by his son and a group of Russians or by federal prosecutors who unearth serious financial crimes. On this analysis Mr Bannon gave Mr Trump equal chances of staying in office, being removed by Congress or being declared mentally unfit for office.

The last option seems far-fetched, but the US constitution's 25th amendment allows for a president to be removed if he is "unable to discharge the powers and duties of his office". Such is Mr Trump's divisiveness that a social movement of mental-health professionals has sprung up which argues Mr Trump suffers from incurable malignant narcissism and this renders him unfit for office. This is a break with conventions adopted in the wake of the failed rightwing US presidential candidate Barry Goldwater's successful legal action against a magazine after it published a story in 1964 saying medics declared him so "severely paranoid" that he should not be able to become president. Since then psychiatrists have largely refrained from giving opinions about figures they have not personally examined.

It is a measure of how troubled the White House is seen to be that senior Republicans openly worry that the president is unravelling. Yet however erratic Mr Trump might be and however unsuited for high office, Republican voters remain loyal. Despite the rhetoric, Mr Trump's base is largely made up of well-off and rightwing citizens rather than white, working-class voters struggling in a rapidly shifting global economy. This explains why his singular accomplishment, the Trump tax cut, will hurt poorer voters more than the Wall Street fatcats he railed against on the campaign trail ...

https://www.theguardian.com/commentisfree/2018/jan/05/the-guardian-view-on-the-trump-presidency-a-reckless-and-undignified-spectacle