Reid may not be able to introduce this either, because the decision has to be made with the White House. In fact, the Arizona case has altered Obama that he has to push CIR this year. He is only 1/2 way through his service, and he has disappointed some voters (and many liberal voters) on many issues, such as health care reform and military actions. Of course, I have nothing to against his final actions because politics cannot be predicted.
Now, when Obama spoke against the Arizona case, he is actually testing the reactions of the congressmen. He wants to see whether they are interested in pushing CIR. He knows that he cannot push CIR right away, because energy bill is still sitting there waiting for a debate.
Now that Obama knows that Graham is not joining the game, Obama is upset.
If he cannot get Graham to join the bipartisanship, this mean that Democratic will not lose a lot of neutral voters as well, because neutral voters always want bipartisanship.
If Graham does not support CIR, this means that other Republicans, whether they have or are currently supporting CIR and DA, they will also stop their sponsorship.
Of course, Graham is very likely not going to play this game, until his 2012 year. So Obama has been pushing the remaining two bills that are sitting in-front of CIR, one is energy, and the second one I don't remember.
Regardless, if they cannot get these two things done before they are off for summer recession, any immigration effort is useless.
I doubt about the chance, but let's keep some hopes.