Redistributing wealth can be, and is in practice, one of the aim of the government. Depending on the social values the party follows, different countries and different governments will value different things and will want to redistribute between different groups of people. Typical example is to redistribute from rich to poor. We can argue whether it is effective and efficient or not. This process is done from the money collected in taxes and redistributed e.g. through social transfers such as benefits to unemployed. There is no doubt that some of the tax revenues are used to cover the costs of running the government, i.e. costs of buildings, personnel, and so one, not to mention the healthy salaries of politicians. The bigger the government, the more taxpayers' money will be needed to cover its costs. In recent years, for example the British government has grown substantially. Whether it happened in US I don't know. Given the size of the stimulus package Obama issued for the collapsing banks, my guess is, the US government is pretty big.