“…a man who advertises himself as a conservative and champion of individual liberty.”

You need to check your premises.

Conservatism was born of religious reaction against the Enlightenment (specifically its roots in the reliance upon reason); the Left is merely the anti-Enlightenment, a perversion of that salutory culture engineered by Immanuel Kant.

Individual liberty is a principle born of the Enlightenment. Its current association with conservatism is a consequence of political expedience, no more; it is an adopted orphan that ultimately does not belong there. It is NOT a “principle of conservatism”; if you want to see what those really are, you need to read “The Conservative Mind” by Russell Kirk, for starters.

McCain-Feingold is definitely at odds with freedom and liberty; in the original meaning, it is certainly an illiberal, un-American piece of legislation. But there are no grounds to call it “un-conservative” — unless conservatism has become something other than what Kirk and others of his ilk say it is.