President Donald Trump likely had ulterior motives when he invited Elon Musk to the Oval Office for a press briefing, says a former White House official.

Billionaire Elon Musk and President Donald Trump presented a united front in the Oval Office on Tuesday — before Trump granted Musk even more power. Trump signed an executive order that requires federal agencies to report to the Musk-led Department of Government Efficiency Service as they cut down the federal workforce.

It’s not draconian or radical,” the billionaire said in a lengthy question-and-answer session alongside President Trump that sought to make the case for his Department of Government Efficiency.