I'll gladly call myself a 'Redskin' over that wishy-washy overly generic "Native American" term any day.  This term is far more derogatory than Redskin has been, or ever will be.

Na·tive A·mer·i·can - a member of any of the aboriginal peoples of the western hemisphere.

Gee, that means I from the west side of the planet versus the east side of the planet.  That's just one step above being a human.  I want to be referred to with a little more distinction than just what side of the planet I originated from.  Let me ask you this - Would rather be a Rose or flowering fauna?
  
However, I guess I shouldn't complain too much anymore because Caucasian people are no longer 'white' they are now refereed to as 'Non-Hispanic.'