Here are the Republicans who did not show up:
Rep. Dan Burton, Indiana
Rep. Christopher Shays, Connecticut
Rep. John M. McHugh, New York
Rep. John L. Mica, Florida
Rep. Mark E. Souder, Indiana
Rep. Todd Russell Platts, Pennsylvania
Rep. Chris Cannon, Utah
Rep. John J. Duncan, Jr., Tennessee
Rep. Michael Turner, Ohio
Rep. Darrell E. Issa, California
Rep. Kenny Marchant, Texas
Rep. Patrick T. McHenry, North Carolina
Rep. Virginia Foxx, North Carolina
Rep. Brian Bilbray, California
Rep. Bill Sali, Idaho
I'm pretty sure I saw Issa present while watching CSPAN.