The first of four parts.
Public policy debates often feature clever terminology intended to frame the issue and thereby influence the way we think about it. We have negative framing with "death tax" instead of "estate tax" and "government takeover" instead of "national health insurance". And we have positive framing with "gaming" instead of "gambling" and "right to choose" instead of "abortion rights". If you change the name, you can change the frame, and that can change how the public responds.
The immigration debate has produced some important linguistic battles. The mother of all of them has been waged over the term "illegal immigrant".