From Kurtz’s column today:

The president’s liberal critics tend to cluster around particular issues. Some see health reform as making or breaking Obama’s first term. Others are disappointed at the pace of withdrawal from Iraq, the escalation in Afghanistan and the delay in closing Guantanamo Bay. Still others argue that Obama should be leading the charge to investigate terrorism-related abuses during the Bush administration.

The absence of immigration from this list is no accident. All the lefty pundits he’s talking about want an amnesty, obviously, but it’s not that important to them. The heat that Obama’s been getting about his dilatory pace on immigration comes only from niche groups that aren’t all that important in the big picture. The opponents, on the other hand, are quite intense in their opposition and include a lot of prominent voices on the right. This is why there just isn’t going to be a “comprehensive” amnesty during this Congress.