Illegal immigration is ALREADY illegal! (Duh!) Because some legislature already passed laws against it.
Minetta! ARGH!
I can over look a headline error, and often do, except to poke fun at the wording (ala James Taranto). Space limitations and such make such shortening necessary. BUT, take a look at the article:
House Judiciary Committee Chairman F. James Sensenbrenner, Jr. (R-Wis.) that prevents illegal immigration and takes needed steps
They compound the error and thus reinforce your point!