Trump: 'Who pays' for Obama's appearance with Clinton?

Donald TrumpDonald TrumpHeadaches intensify for Democrats in Florida Stormy Daniels set to testify against former lawyer Avenatti in fraud trial Cheney challenger wins Wyoming Republican activists' straw poll MORE is criticizing President Obama's use of Air Force One to travel to a campaign event in North Carolina on Tuesday with Hillary ClintonHillary Diane Rodham ClintonNo Hillary — the 'Third Way' is the wrong way The dangerous erosion of Democratic Party foundations The Hill's Morning Report - Presented by Facebook - Democrats see victory in a voting rights defeat MORE.

“Who pays?" Trump asked late Monday on Twitter, noting that Clinton will fly with Obama.

A White House official told a Time magazine reporter that the Obama administration, like previous administrations, follows “all rules and regulations to ensure that the [Democratic National Committee] or other relevant political committee pays what is required for the President to travel to political events.”

Clinton and Obama will appear together for the first time on the campaign trail in Charlotte, N.C. Trump also has an appearance set in North Carolina on Tuesday, in Raleigh.

ADVERTISEMENT

Trump on Tuesday called the use of Air Force One a "total disgrace."

This report was updated on July 5 at 7:18 a.m.