I doubt that this will pass.  Especially not in election year.  Immigration is a dirty word right now among political circles.  Maybe this will be possible in 2009.

It would be nice if they give preference to US Bachelors Degree holders though.

Adding to Thyangboche's post with some changes:

30,000 US Bachelors Degree
20,000 US Masters Degree
20,000 US PhDs (PostDocs would be included here)

40,000 Rest of the world

Me'thinks.