David McCann "Mac" Sweeney (born September 15, 1955) is a Republican former member of the United States House of Representatives from Texas.Born in Wharton in Wharton County west of Houston, Sweeney earned his Bachelor of Arts and Juris Doctor from the University of Texas at Austin. In his early political years Sweeney served on the staffs of Republican Senator John G. Tower from 1977–1978, and former Governor John B. Connally, Jr., from 1979 to 1980, when Connally was seeking the 1980 Republican presidential nomination but finished with only one committed delegate. Wikipedia