Rees-Mogg and co have been making that argument since the referendum, so there is little justification in the Express repeating it now - the EU have always been clear they don't want a hard border either in any circumstances. But there is a world of difference between what people want and what the law and circumstances may oblige them to do.

Einstein is often attributed with the saying "Everything should be as simple and possible but no simpler." (Actually, what he said was more complicated than that! :) .) The Irish border has been the subject of intense negotiation between the UK and the EU. As Mogg was saying that while the negotiations were happening, it is incredibly unlikely it was not considered and rejected as unworkable.

We have discussed lots of variations of this in this thread or its predecessor. As with most subtopics, we have not got beyond and assertion it could work with no explanation of how that can cope with all the differing requirements of the 'users'.