Trump, for his part, suggested he would terminate government contracts with Musk's businesses, which include rocket company SpaceX and its satellite unit Starlink
His massive taxes on imports - tariffs - are expected to raise costs for US companies that buy raw materials, equipment and components from overseas
Hassett headed the White House Council of Economic Advisers, which advises the president on economic policy, from 2017-2019
The decades since Reagan have been marked by vastly increased inequality