Senators should do what is best for their country, and if it helps their "constituents", then fine, but blatant pork barrel spending is one of the major reasons why the national debt is as high as it is. And it's one thing to have a single item that is considered a "pork barrel" expense, but the ethanol boondoggle has cost billions and billions year after year after year. And it's largely only benefitting the wealthiest corn growers.