Re: @Wellyboot eh?
but when you can't cover the checks you write
You mean, like the UK did in the 1950s? I believe that's exactly what they did - going cap in hand to the IMF on the basis that the Yanks had pulled the rug from under them and the UK couldn't afford to pay?
Something which lead to the realisation that the UK needed closer links to Europe. After all, even Maggie wanted to join the EU - she just wanted it on *her* terms. Which she got. Which we've thrown away since any attempt to rejoin post-Brexit assuredly won't have the same terms.
Welcome back to the 1950s - where our fiscal and trade policy will be dependent on an increasingly isolationist US.