Over the course of this year's immigration debate, we've come to view the Republican party division as follows. On one side, advocating for comprehensive immigration reform, you have a group that is sometimes called "the establishment" or "the elite," made up of people whose primary interest is in the party's long-term national prospects. These are the big money people, the top consultants, some senators, and so on. On the other side, opposing comprehensive reform, you have "the base," which is not only voters but also members of the House with a narrow interest in getting re-elected, usually by appealing to extremely conservative constituencies. On that side you also have some conservative media figures and others with strong ideological motivations against immigration reform. And then caught in the middle you've got the Republican congressional leadership, which can't afford to antagonize the base but also worries about the effect killing immigration reform will have on the party.
But we may be reaching the point where these categories are no longer adequate to describe what's going on within the GOP. This morning, William Kristol and Rich Lowry, the editors of the two most important conservative magazines (the Weekly Standard and National Review) joined together to write an unusual joint editorial titled "Kill the Bill," coming down in opposition to the "Gang of 8" immigration bill that passed the Senate. The substance of their argument is familiar to anyone following this debate—the Obama administration can't be trusted, it won't stop all future illegal immigration, the bill is too long—but the substance isn't really important. What's important is that these two figures, about as establishment as establishment gets, are siding firmly with the anti-reform side.