Well, I guess he should know:
I don't know how old this article is, "Rep. Duncan Hunter, a California Republican who is the leading voice in Congress for more fences, said the costs of building fences are much lower than the government expenses associated with illegal immigration, including huge sums spent on incarcerating immigrants convicted of crimes in the United States."
Former Congressman Hunter is now sitting in jail having been convicted of accepting bribes and kickbacks. I just love it when these corrupt politicians, who always complain about poor people trying to find a better life, are found to be criminals themselves.