Federal Income Tax?

Where is the law that plainly and clearly imposes liability for the federal income tax on the typical working American? (THERE IS such a law and YOU ARE liable to pay Federal Income tax no matter what Aaron or anyone else says?)

I received an email from an organization announcing a $300,000 reward if you could "show them the law", it read: "Where is the law that plainly and clearly imposes liability for the federal income tax on the typical working American?"

Look... THERE IS SUCH A LAW AND IT IS SUPREME... PERIOD? I'm well versed in "the tax protester movement", I saw Freedom to Fascism (I even have it on the video section), I know Aaron (R.I.P. friend), I understand it all, but like most other patri-ot "theories", although ROMAN-TIC, it is FUNDAMENTALLY FLAWED.

DON'T PANIC?