There are definitely problems with British-Northern Ireland trade. There is an EU-UK process in place to manage those issues and dial down the worst consequences. It is a binding international deal. The DUP says the protocol amounts to “A Border in the Irish Sea”. The dub it a “sell-out” by London to a “Brussels-Dublin conspiracy”. They have made no effort to point out that the North has the best of both worlds with trade access to 450 million people in the EU single market and 65 million people in Britain. Unionist leaders have prioritised the political link with the United Kingdom and have fed their grassroots supporters’ feeling of betrayal and frustration.