PHOTOS: A look at Trump's Secret Service detail
Trump's adult children remain closely connected to the president while also maintaining the family business, and they must all be kept under federal protection.
Costs for guarding the Trumps were estimated to eventually surpass that of President Barack Obama's eight years in office.
Most of the costs have been accrued by Trump's frequent weekend visits to his golf courses and Mar-a-Lago, in Florida.
There was also significant backlash from New York City residents over the high security costs for first lady Melania Trump and their son, Barron, while he finished the school year in Manhattan, however the two have since moved to Washington DC.
It was reported Wednesday that the Secret Service recently vacated its command post in Trump Tower due to a lease dispute with the Trump Organization.