Hizb ut-Tahrir, (HT) the pro-jihadist organization meeting this weekend in suburban Chicago, has been waging a below-the-radar campaign to recruit Americans for decades. While HT (the "Party of Liberation") says it is committed to advancing radical Islam by nonviolent means, it advocates violence (see here, here and here) and its prominent alumni include terrorists like Khalid Sheikh Mohammad and Abu Musab Zarqawi along with suicide bombers.