John joined the Trump campaign in 2015 as one of its first members, quickly rising to become Trump's personal advisor and then head of the Presidential Personnel Office. Widely recognised for his success in restoring President Trump's authority over the federal bureaucracy, John was hailed by the New York Times as "one of Trump's most trusted aides". After leaving the White House, he founded the dating app The Right Stuff with the backing of legendary tech investor Peter Thiel. John, dubbed a "TikTok icon" by USA Today, has 2.3 million followers on the platform and another 1.4 million on Instagram.