Rex Tillerson

1952 – 20??

Rex Wayne Tillerson is an American oil executive who served as chairman and CEO of ExxonMobil from 2006 to 2016 and as the 69th U.S. Secretary of State from 2017 to 2018 in the first Trump administration. As ExxonMobil's CEO he oversaw a corporate strategy that internal investigations later revealed had publicly downplayed climate change despite Exxon scientists' own clear understanding of its severity for decades. As Secretary of State he presided over a sustained gutting of the State Department's career diplomatic ranks before being fired by tweet by Donald Trump in March 2018.

Last checked: May 10, 2026, 1:06 PM