Well, the IRS collects taxes and the whole tea party thing is kinda against taxes in some ways, it only seems logical that they would have a closer look at them, no?
Does the IRS have an obligation to be neutral or what would be a good reason for them to have a closer look at an organization requesting tax exempt status? If I called my organization "tax evasion organization" and wanted tax exempt status, would that be a reason for a closer look or would that be political bias simply because my political view is that I should be allowed to evade paying taxes?