Ex-Trump advisor Gary Cohn complained he only used 20 percent of his brain power in the White House: report
White House National Economic Council Director Gary Cohn at the Davos World Economic Forum in 2016 (image via World Economic Forum/Creative Commons).

Outgoing Trump economic adviser Gary Cohn reportedly complained that he wasn't being used to his full potential shortly before he announced his departure from the administration.

According to Axios' Mike Allen, Cohn told Trump recently that he was only "working at like 20 percent of my capacity," and he said he wanted a job where he could, in Allen's words, "he would use 80% or 90% of his brain capacity."

Additionally, Allen reports that Cohn was regularly frustrated that much of his job revolved around trying -- and eventually failing -- to educate Trump about the nuances of international trade and the dangers of sparking a trade war with other nations.

"Trump announced this week that he planned to impose sweeping tariffs on steel and aluminum — an embarrassment to Cohn, who had boasted to his Wall Street and Hamptons buddies that he had kept the president on the right track on trade," writes Allen.