Board of Governors of the Federal Reserve System, the Federal Deposit Insurance Corporation, the Office of the Comptroller of the Currency, and the Office of Thrift Supervision) issued a final guidance outlining the supervisory review process for the banking institutions that are implementing the new advanced capital adequacy framework (known as Basel II). The final guidance, relating to the supervisory review, is aimed at helping banking institutions meet certain qualification requirements in the advanced approaches rule, which took effect on April 1, 2008. Basel 2.5 For public consultation, a series of proposals to enhance the Basel II framework was announced by the Basel Committee in January 2009. It released a consultative package that includes: revisions to the Basel II market risk framework; the guidelines for computing capital for incremental risk in the trading book; and the proposed enhancements to the Basel II framework. A final package of measures, known as Basel 2.5, enhanced the three pillars of the Basel II framework and strengthened the 1996 rules governing trading book capital was issued in July 2009 by the newly expanded Basel Committee. These measures included revisions to the Basel II market-risk framework and the guidelines for computing capital for incremental risk in the trading book. A further consultation was launched in December 2009 which resulted in further updates in 2010. Implementation International consistency One of the most difficult aspects of implementing an international agreement is the need to accommodate differing cultures, varying structural models, complexities of public policy, and existing regulation. Banks' senior management will determine corporate strategy, as well as the country in which to base a particular type of business, based in part on how Basel II is ultimately interpreted by various countries' legislatures and regulators. To assist banks operating with multiple reporting requirements for different regulators according to geographic location, there are several software applications available. These include capital calculation engines and extend to automated reporting solutions which include the reports required under COREP/FINREP. For example, U.S. Federal Deposit Insurance Corporation Chair Sheila Bair explained in June 2007 the purpose of capital adequacy requirements for banks, such as the accord: There are strong reasons for believing that banks left to their own devices would maintain less capital—not more—than would be prudent. The fact is, banks do benefit from implicit and explicit government safety nets. Investing in a bank is perceived as a safe bet. Without proper capital regulation,