Ms Slater hails from Dalkey, Co Dublin and graduated from UCD Sutherland School of Law. She is a dual US-Irish citizen and has lived in the US since 2003.

She was part of the previous Trump administration and will have a more senior role when Donald Trump returns to the White House in January 2025.

Mr Trump announced the move on his Truth Social platform this week, in a statement littered with capital letters in his typical unorthodox style.

“I am pleased to nominate Gail Slater as Assistant Attorney General for the Antitrust Division at the Department of Justice,” he said.

“Big Tech has run wild for years, stifling competition in our most innovative sector and, as we all know, using its market power to crack down on the rights of so many Americans, as well as those of Little Tech!

“I was proud to fight these abuses in my First Term, and our Department of Justice’s antitrust team will continue that work under Gail’s leadership.

“Gail previously served at the FTC, in my National Economic Council and, most recently, advising Vice President-Elect JD Vance in his Senate office. Gail has also worked in the private sector, in Media at FOX, and in the Tech sector at Roku.

“In her new role, Gail will help ensure that our competition laws are enforced, both vigorously and FAIRLY, with clear rules that facilitate, rather than stifle, the ingenuity of our greatest companies.

“Congratulations Gail — Together, we will Make America Competitive Again!”