The Secret Service protection was costing the government around $40,000 a day, a fact that became controversial as Gingrich's campaign wore on and faded increasingly into irrelevance.
The decision came down from the administration, according to Gingrich press secretary R.C. Hammond.
"We informed the Department of Homeland Security of the campaign's plans to suspend on Wednesday," Hammond said. "It is their decision when best to stop providing coverage."