Without too much detail a local immigration attorney says he has successfully defended 40,000 cases in 19 years! Maybe 4000 but 40K? Does that sound right for this type of practice? There a lot of other things wrong with the commercial but that would take a while to explain.
Two thousand cases a year, about 250 working days in a year means that he has had 8 cases each and every day. Not possible for a single attorney.
4,000?, perhaps he had an accent or lisp

Maybe the firm does? Him and his associates together...still sounds like alot...that's like 0.1% of the illegal population every year. Does it really matter?