I think what he is trying to say is that we all (most) came here "Illegally" at some point since we came in and pushed the Native American's out. Kind of a moot point at this point since it was so long ago...and we have changed so much since then.
Also, I would bet there are more people in this country who immigrated legally then were a part of the first "Illegal" wave in the 1700's. I am only 3rd born generation...and my great grandparents were legal immigrants...so I am legal.
