Trump has won support, too, from some people with a unionist background and for whom the United States is now home.
Originally from north Belfast, Michael George has become friendly with the Trump family through his banking career in Manhattan.
He sees some merit in the president’s tariffs as policy tools.
“He wants to try and encourage free and fair tariffs,” said Mr George.
“He says he is going to do reciprocal tariffs. Well, if the Europeans tariff us why shouldn’t we tariff them?”
Mr George believes the widespread use of tariffs on foreign imports is a tactical move that will end in negotiation.
Trump’s “America First” vision seems to enjoy support from diverse parts of American society for now. Whether that remains the case, only time will tell.
Trump, Tariffs and Us, is on Sunday 30 March at 22:30 BST on BBC iPlayer and BBC One Northern Ireland. It was produced for BBC Northern Ireland by Clean Slate TV.