There are two things to consider - the legislation itself, and the legislative history. If you read the legislative history, that is, the testimony and claims

There are two things to consider - the legislation itself, and the legislative history. If you read the legislative history, that is, the testimony and claims of lobbyists, the floor debate, the PR releases, the statements made by congressional representatives, and so forth, I do think it's overwhelmingly clear that this legislation was presented and sold as a program to bring highly skilled, highly paid workers into the US who were supplementing rather than replacing the existing US workforce.