Congressional Budget Office Cost Estimate: S. 942: Government Charge Card Abuse Prevention Act of 2009 [open pdf - 18KB]
"S. 942 would require each executive branch agency to establish controls on the use of government credit cards. The bill would require each agency's inspector general (IG) to assess the risk of illegal or improper credit card use and to conduct periodic audits to identify potentially fraudulent activities. The bill also would allow agencies to dismiss employees who are found guilty of misusing government credit cards."
Congressional Budget Office: http://cbo.gov