Internet reports that many well-known economists have expressed support for Federal Reserve Governor Lisa Cook after US President Trump sought to fire her on suspicion of mortgage fraud. Nearly 600 economists have signed an open letter in support of Cook, saying the threshold for removing Fed governors is high and elected officials should avoid words and deeds that erode the Fed's independence. The open letter was published Tuesday and was signed by Nobel Prize winners Claudia Goldin and Paul Romer, Christina Romer, who was the chairman of the Obama administration's Council of Economic Advisers, and Ohio State University professor Trevon Logan, who co-authored the paper with Cook.