Left-wing "progressive" thinktank in Washington DC. Founded by former Clinton chief of staff John Podesta. Now a source of both ideas and people for the Obama administration.
They also support illegal immigration; per them, a "progressive" precept is opposition to xenophobia, and in their case that's manifested by supporting illegal activity. One of their senior fellows is part of the Mexican government's extended network. They also run the blog ThinkProgress, a juvenile site that specializes in gaffes, mockery, enforcing political correctness, and the like. That blog also refers to mainstream rightwing talk radio as "hate radio", and CAP released a study arguing for "localism" and opposing media consolidation, two things that would help drive rightwing talkers off the air. Both those are supported by Barack Obama.