“The Chief of Staff did not ‘block’ him [President Vucic] from attending any event at Mar-a-Lago,” White House press secretary Karoline Leavitt told The Pavlovic Today.

If the Chief of Staff did not ‘block’ him [President Vucic], maybe it’s Trump himself! While the Chief of Staff plays a vital role in advising and managing the flow of information, the President can choose to disregard their advice and act independently.