He's getting inflated but data on Tuesday shows a British economy struggling for air.
Brexit at least partially to blame, say its critics.
If for its fans, it would make new trade deals possible - and possibly one of the biggest of all.
(SOUNDBITE) (English) UNITED STATES PRESIDENT, DONALD TRUMP, SAYING: "I think we'll have a very very substantial trade deal.
It'll be a very fair deal, and I think that is something your folks want to do, my folks want to do, we want to do and we're going to get it done." It's a pledge that may have symbolic value only for a UK prime minister leaving office on Friday.
But will doubtless be welcome among executives from Lockheed Martin, JP Morgan Chase, Goldman Sachs and others at this breakfast roundtable in London on Tuesday.
That is if the two sides can resolve differences over Huawei: the British government has appeared to defy White House demands and allow the Chinese company a limited role in building 5G networks.
And differences over some likely areas of contention in a deal, such as U.S. access to UK agriculture and health services.
For now, the language remains diplomatic.
(UPSOT) (English) BRITISH PRIME MINISTER, THERESA MAY, SAYING: "And of course our honourable guest, Donald Trump, who knows a thing or two about business himself as well ...." The data is less polite: Construction had its worst month in over a year in May as customers postponed investment in the face of Brexit uncertainty.
The sector lost jobs at the fastest rate since 2012, a survey shows.
And, raising questions over consumer confidence, the British Retail Consortium says shoppers slashed spending last month by the most in more than 20 years.
More evidence of a UK economy itself stuck too, perhaps, in a compromising position.