US President Donald Trump has said he is “not happy” with US Health Secretary Tom Price over his private plane travel on official government business.
Mr Trump said he was “looking into it” after reports emerged that Mr Price had taken 24 flights on private planes for official trips since May.
Internal and congressional inquiries have opened into the matter.
Two other members of Mr Trump’s cabinet are also under scrutiny for their use of private planes while on the job.
Government officials, with the exception of those dealing directly with national security matters, are required to take commercial flights for work-related travel.