Touting support for their tax cut legislation, House Speaker Paul Ryan, R-Wis., the Senate Finance Committee, and Sen. Rob Portman, R-Ohio, released a letter this week signed by 137 economists who say they strongly endorse the Republican legislation before Congress.  But a review of the economists listed on the letter reveals a number of discrepancies, including economists that are supposedly still academics but are actually retired, and others who have never been employed as economists. One might not even exist.