Congressional Budget Office Cost Estimate: H.R. 1: Implementing the 9/11 Commission Recommendations Act of 2007 [open pdf - 47KB]
"H.R. 1 would change laws and authorize funds to implement recommendations made by the National Commission on Terrorist Attacks upon the United States in 2004. CBO estimates that implementing this legislation would result in new discretionary spending of $21 billion over the 2007-2012 period. In addition, H.R. 1 would affect direct spending by authorizing the Transportation Security Administration (TSA) to collect over the 2008-2011 period nearly $1.3 billion in fees from airline passengers and spend those amounts to improve security measures at airports. CBO estimates that receipts from such fees would initially exceed spending, resulting in a net reduction in direct spending of $425 million in 2008. Savings in that year would be fully offset by corresponding increases in direct spending in later years, resulting in no net change in direct spending over the next 10 years. Enacting H.R. 1 would not have any significant impact on revenues."
Congressional Budget Office: http://www.cbo.gov