Every single phony scandal this man trumped up was a bust. He spend millions of taxpayer money on investigations into Benghazi, IRS, and just about anything that might question the competence of government, especially the executive branch. There is no telling the total tab when the costs of defense and compliance by various agencies are included.
Issa is termed out, but, ..., wait for it ... his Republican successor who will chair the oversight committee will be just as bad. Read the full accounting at Salon or a compressed version at Daily Kos.