NSA and non-US citizens

This pisses me off.

To start off with, it looks like if you try and hide your identity on the net, then it puts up some red flag at the NSA and they start monitoring you somehow. OK that's bad enough, but I was pretty bloody annoyed in reading this about it:

While the documents make clear that data collection and interception must cease immediately once it's determined a target is within the US, they still provide analysts with a fair amount of leeway. And that leeway seems to work to the disadvantage of people who take steps to protect their Internet communications from prying eyes. For instance, a person whose physical location is unknown—which more often than not is the case when someone uses anonymity software from the Tor Project—"will not be treated as a United States person, unless such person can be positively identified as such, or the nature or circumstances of the person's communications give rise to a reasonable belief that such person is a United States person," the secret document stated. 

And in the event that an intercepted communication is later deemed to be from a US person, the requirement to promptly destroy the material may be suspended in a variety of circumstances. Among the exceptions are "communications that are enciphered or reasonably believed to contain secret meaning, and sufficient duration may consist of any period of time during which encrypted material is subject to, or of use in, cryptanalysis." more

So am I getting the wrong message here? It looks like to me that the US doesn't give a fuck if foreigners get monitored by the NSA, it's only when it's US citizens that it's a problem? How arrogant. Are US citizens therefore deemed more important than anyone else?