A member of the U.S. rail regulatory board said he discovered that he had been fired by the Trump administration after returning home from an Amtrak event to unveil new high-speed Acela trains. “I was just as surprised as anyone else,” the former Surface Transportation Board member, Robert Primus, told CNBC’s Eamon Javers on Thursday in his first broadcast interview since his removal. Primus, a Democrat who was nominated to the board in 2020 during President Donald Trump’s first term, also reaff