Sad but true.
Check it out:

Our current model of high tax rates, peppered with loads of special breaks and exemptions, has a number of significant advantages for the political class. It allows them to hide the true weight of the tax burden from the American public. It gives them a way to reward big donors and favored constituencies. It turns the tax system into an instrument of control, instead of a simple mechanism for funding modest government. Tax breaks can be used to encourage certain behaviors and, by extension, discourage activities that would expose taxpayers to a higher rate. The tax system is even used to distribute welfare payments through tax credits, sending “tax returns” to people who didn’t actually pay any income tax – a system that is abused to the tune of about $14 billion per year in false claims.