Under the law, there are two types of warranties: implied and express. Implied warranties exist under state law, as outlined in Article 2 of the Uniform Commercial Code (UCC). The UCC, which covers all 50 States and the District of Columbia, is a means of consolidating laws regarding commerce as a means of streamlining interstate legal issues. This allows each state to adopt the same definitions of, in this case, implied warranties. In 2003, a substantially revised version of Article 2 of the UCC was approved by the National Conference of Commissioners on Uniform State Laws and American Law Institute, but as of early 2006 no state had adopted the revised Article 2.