The Congressional Budget Office has released an updated study of the budgetary impact of comprehensive immigration reform as described in S. 744, the bipartisan Senate bill. This is in portable document format. You will need Acrobat Reader to view. This is a 10-page letter to Senator Patrick Leahy, chairman of the Senate Judiciary Committee, which reported the bill to the Senate floor for debate and a vote of approval. The bill now goes to the House.