It was founded by the world class Yahoo Ramsey Clark. I do not know whence comes their funds but it is probably the usual suspects.
The problem is that most Americans don't have the time to sift through the underlying history of common and Constitutional law, which is probably why it's relatively easy to castigate brilliant scholars like Robert Bork and Antonin Scalia, who are two of the most eloquent spokesmen for originalism, but are routinely (successfully) demonized by dimwits like Joe Biden and Ted Kennedy, who know absolutely nothing about this nation's bedrock legal document.
Horowitz probably has greater insight into the seditious left's attempts to undermine our resolve on the domestic front than any other contemporary polemicist/pundit.
He wrote a very incisive essay-entitled "The Passion of the Jews"-years ago for Ramparts, when he was still a proud member of the new left.
It dealt specifically with the seeming conflation, among Jews, of Utopian notions of compassion and humanitarianism and contemporary strains of socialist political dogma.
Even though it focused almost exclusively upon the struggle within the Jewish community to reconcile essential Talmudic law and religious truths with modern notions of egalitarianism and equality, the idea of "tikkun olam," expressed in the continuing drive to save humanity through utopian socialist schemes, is not unique to one faith.