... International Union (link).
* Amnesty International USA (link)
12/15/09 UPDATE 3: Per this:
A draft overview of the bill, circulated with the letter, ends some enforcement tools such as the 287(g) local police cooperation program, calls for an electronic verification system to replace the voluntary E-verify program, argues that there's no need for more U.S. Border Patrol agents or fencing, and...
The Asian American Justice Center runs the Rights Working Group, a coalition of over 250 leftwing groups, and they have a petition calling on Barack Obama to in effect not do immigration enforcement. They want a "moratorium" while the subject of raids and the like is "studied", but everyone knows what that means. Since there are so many groups, the full roster is here. The main groups are listed...