I attended a forum sponsored by National Journal over the summer that included Senator Ron Johnson and Congressman John Delaney. The discussion around H-2B Visas was mostly about the need to increase them to fill a need for high-skill immigrants, especially in tech. Your article seems to suggest these new visas will be used by people who will compete for lower-skilled jobs, such as food servers and janitors. I wonder what research exists on what kind of jobs these immigrants hold.