Congress is all about money and where they can get more. Trade groups (like ITAA, the tech industry's think tank in support of H-1B) are created using a 6-figure check from some CEO, while an employee group takes time and effort and what little money it can get.
The next wave is companies simply outsourcing projects, and then entire departments, offshore. India, Malaysia, the Phillipines, South Africa are all prime sources of IT talent.
I'm selling these resources, and they're ready to go.
And companies are talking to us, seriously.