To judge from the headlines in the liberal press, or liberal commentators on the BBC, you would think Donald Trump's presidency in the US was on its last legs. This follows the conviction yesterday of two of his (formerly) close advisers, and his being implicated by one of them in an illegal pay-off. But these commentators have failed to understand how the Trump phenomenon has rewritten the rules of US politics. Provided he maintains his health, Mr Trump will surely last until the end of his term in 2020. And if his liberal opponents continue to underestimate him, he could well win a second term.
The first point to make is that Mr Trump is utterly shameless. He is not the least bit embarrassed by anything that he has done. Call this narcissism if you like, but he will fight on. The second point is that his base of support both remains solid, and maintains a grip on the Republican party.
To his base, Mr Trump is the man who has delivered. Evangelicals have their conservative judges. Business leaders have their tax cuts and roll-back of tiresome regulations. Conservatives everywhere are enjoying are enjoying the rout of liberal values: it feels like fresh air. And the bad behaviour? That is utterly unsurprising; they knew the sort of man they were taking on. So long as he is doing the job of battering ram, they will forgive everything. Corruption is something that happens to liberals, in their eyes, and not to politicians on their own side. Indeed in they seem to think that corruption is less about illegal payoffs and more about the process of political compromise with people who are not like them.
So neither Mr Trump nor his base will be shaken by recent events. Legally the President looks secure too. There is debate as to whether it is possible to indict a sitting president with a crime - but if that came to be tested the Supreme Court has shown no appetite to challenge Republicans on anything important. It is unlikely that the special prosecutor, Robert Mueller, will even try. Everybody else in Trumpland is either dispensable or Mr Trump can use his powers of pardon. There is pretty much nothing Mr Trump would not do rather than admit defeat.
Which leaves the danger of impeachment, which is essentially a political process. It is looking likely that the Democrats will take control of the House of Representatives in the mid-term elections in November. That would allow impeachment to proceed. If there were grounds to do so against Bill Clinton in the 1990s, there will be more than enough against Mr Trump. But success depends on the votes of two-thirds of the Senate. Which means that half or more Republican Senators will have to turn against him. Given Mr Trump's hold on the party grassroots, and his ability to undermine the credibility of any given opponent by a constant process of smearing, he looks secure. He will paint the impeachment as a politically tainted process, and not without a degree of justice. This is politics, and Mr Trump has proved to be America's most effective politician.
The problem for liberals is that they persist in judging Mr Trump and his supporters by their own standards. Mr Trump's behaviour would kill a liberal politician's career. But Mr Trump does not need liberal votes. Instead he is playing an altogether different game: the politics of emotion, victimhood and identity. It is something liberals really don't get.
But Donald Trump is politically vulnerable. His base is as loyal as ever, but it is a minority. He is making little attempt to win over anybody else: indeed he enjoys antagonising large sections of the US nation. This is one reason why it looks as if he will do badly in the mid-term elections. Another is that there are some cracks in his record for some of the people who had supported him.
To his supporters Mr Trump is a breath of fresh air because, unlike politicians before him, he is delivering on his election promises. That is true in the sense that he is doing things that mainstream politicians have not dared to do: notably the ratcheting up of the trade war, which has widespread public support. There are broken promises aplenty, of course, but these are either on secondary issues, or easy enough to pass off blame onto others. But I think there are two sources of trouble. One is healthcare reform. This is fiercely complicated, and the Trump administration is unable to do anything complicated. His attempts to push through a reform last year collapsed. That itself is not a problem: there are plenty of people to blame it on. And if he had succeeded it might actually be worse for him. The problem is that for many working class Americans, getting decent and affordable health care insurance is becoming impossible. A Republican reform of healthcare would not have helped. But the slow decay of the Obamacare system is making things worse. That is enough to create doubts for a lot of Trump voters, who increasingly realise that the Republicans are not on their side.
A second problem comes with the trade war. The process itself may be popular, but as it progresses it will create more victims. Already many farmers are worried. It may be enough to help the Democrats hold on to Midwestern Senate seats that would otherwise have been near impossible to hold.
This may be enough for the Democrats to overcome gerrymandered boundaries and win the House of Representatives, and even the Senate (tricky because the previous contests were six years ago on a Democratic high water mark). But the path to the presidency in 2020 is much trickier. Once Mr Trump is able to concentrate his political skills on undermining a single opponent, all bets are off. A lot of people blame his victory in 2016 on the Democrats choosing a weak candidate in Hillary Clinton. But in many ways Mrs Clinton was a strong candidate. Mr Trump would have successfully undermined any Democrat opponent, just as he did with his Republican opponents in the primaries.
And there is a trap for Democrats. It is tempting to follow the Republicans into the politics of victimhood and identity. There are plenty of people who feel victimised by the Trump regime. But that takes them away from many of Mr Trump's less committed and more sceptical supporters. He may be able to rally them again. The Democrats need to show that they are standing up for these voters too, on healthcare and jobs in particular.
I continue to hope there will be a moment of revelation to Trump supporters, akin to what Hurricane Katrina did for George Bush Jnr. But the man has survived so many knocks, that I doubt this will happen. After that I just hope that the Democrats can choose a candidate with high ethical standards that can convince all working class Americans that she or he is on their side and Donald Trump isn't.