it is only offensive if you take it that way ... that is the thing about being in the usa ... if you dont like what is said ... you can either say so ,,, or go back to where you came from ........freedom of speach is what a whole lot of us have given blood for in this country .......like it or not .
"Wetback" is a well known, racist word. It has no place here regardless of anyone's political beliefs or ethnicity.