I think that Mark Krikorian points in his post over at the Corner on why Senator Kennedy is not someone you should trust to make immigration bill(In secret at that). Ted seems to have a track record of saying one thing while the opposite is happening. Just take a look:
1965: "The bill will not flood our cities with immigrants. It will not upset the ethnic mix of our society. It will not relax the standards of admission. It will not cause American workers to lose their jobs."
1986: "This amnesty will give citizenship to only 1.1 to 1.3 million illegal aliens. We will secure the borders henceforth. We will never again bring forward another amnesty bill like this."
2007: "Now it is time for action. 2007 is the year we must fix our broken system."