Anwar al Waka Waka and United States Citizenship

Before we begin, I'd like to make it clear that this post's subject includes the likes of John Walker Lindh and anyone else who pisses all over America and then wants to hide behind their "American citizenship."

How does one renounce their citizenship?  There are several ways, one of which is:

(7) committing any act of treason against, or attempting by force to overthrow, or bearing arms against, the United States, violating or conspiring to violate any of the provisions of section 2383 of title 18, or willfully performing any act in violation of section 2385 of title 18, or violating section 2384 of title 18 by engaging in a conspiracy to overthrow, put down, or to destroy by force the Government of the United States, or to levy war against them, if and when he is convicted thereof by a court martial or by a court of competent jurisdiction.

Emphasis mine.  You attack America, you lose your citizenship.  Therefore, you're fair game as an enemy combatant.

What's so hard to understand about that?