PART, the government performance rating tool which is run out of the Office of Management and Budget, rates government programs based both on their purpose and their results (as deemed by the OMB). The OMB, part of the executive branch, then recommends cuts for programs based on these results, however research has shown that these recommendations often have very little to do with how effective the programs were rated. Check out this American Prospect article, PART-ing shots, for a good discussion of some the key problems with PART. The article highlights that OMB seems to be making budget decisions based more on what they deem to be ineffective program purpose, as opposed to ineffective program results. This, as the article says, not only makes PART itself ineffective, but also makes it "subjective and [easy] to manipulate."