Protection for Donald Trump's two-day visit to his golf resort in Doonbeg, Co Clare, in June 2019 cost the US Secret Service more than $524,000.
Documents released to RTÉ News following a US Freedom of Information request show that the bulk of the money, more than $327,000, was spent on renting vehicles.
Hotel accommodation cost more than $136,000, with around $10,500 of that total being spent at Mr Trump's Doonbeg hotel.
Almost $18,000 was spent by the Secret Service on the rental of golf carts, renting tents cost more than $10,700 and $1,845 was spent on refrigerator rental.
More than €2,800 was spent on glass from a window company in Ennis, Co Clare. A forklift was rented from a plant hire company in Limerick at a cost of €400.
Other expenses included $19,400 on staff overtime and allowances, and $2,500 on mobile phone rental and usage, bringing the Secret Service bill for US taxpayers to more than half a million dollars.