Then, as the wise man once said, what the hell is his problem?
I don't think he does. In the case of h2b those with the required skillsets are fast tracked for work visas.
In the case of h2a those seasonal workers needed for agriculture are brought in.
Both have provisions for converting the visas to naturalization.
So perhaps what Hanson was saying is concentrate on those immigrants who add needed value, and prosecute those who bypass the legal methods of gaining access.
And for those who are unskilled, as the wise man said, get a skill.