What is that nebulous thing called politics? Might it be that the practice is essentially exploiting or creating what are known as principal-agent costs? That is, might politics boil down to a skill in the agent (elected representative) in putting his political or economic interests ahead of doing the bidding of his principal(s) (i.e., his constituent body).
In the U.S. Senate bill in early 2013 to obviate the “fiscal cliff,” for example, the Democrats may have agreed to benefits for the Republican lawmakers’ campaign backers in exchange for going along with a more progressive federal income tax system. Among the added provisions were special expensing rules for certain film and television productions—no doubt those made by particular campaign contributors. The provision for tax-exempt financing for the New York Liberty Zone around the former World Trade Center may also have been a favor to a particular someone. Lest it is wondered what an extension of the American Samoa economic development credit was doing in an expedited measure to obviate the “fiscal cliff,” the answer may have had to do with a particular Republican lawmaker’s relationship with someone having an interest in American Samoa. I can only speculate here, as I was not privy to the actual relationships and negotiations. However, the sheer strangeness of such provisions in such a bill suggests that the particular political or economic interests of particular Republican lawmakers may have been the culprit.
In the U.S. Senate bill in early 2013 to obviate the “fiscal cliff,” for example, the Democrats may have agreed to benefits for the Republican lawmakers’ campaign backers in exchange for going along with a more progressive federal income tax system. Among the added provisions were special expensing rules for certain film and television productions—no doubt those made by particular campaign contributors. The provision for tax-exempt financing for the New York Liberty Zone around the former World Trade Center may also have been a favor to a particular someone. Lest it is wondered what an extension of the American Samoa economic development credit was doing in an expedited measure to obviate the “fiscal cliff,” the answer may have had to do with a particular Republican lawmaker’s relationship with someone having an interest in American Samoa. I can only speculate here, as I was not privy to the actual relationships and negotiations. However, the sheer strangeness of such provisions in such a bill suggests that the particular political or economic interests of particular Republican lawmakers may have been the culprit.
The full essay is at "Handouts in Averting the Fiscal Cliff."