Both the jihadist types and the right wing are nothing if not utterly predictable. In this instance, Hamas has endorsed the Ground Zero "mosque", which isn't really a mosque.
The angle here is that one of the criticisms of Imam Feisal Abdul Rauf, the man behind the Islamic center, is that he refused to call Hamas a terrorist organiztion. And here's Hamas standing up for the Imam's mosque, in firm agreement with Obama. Hamas, Rauf, and Obama all agree: Build the mosque!
In reality, of course, Obama did not "endorse" the Islamic center. Rauf is widely seen as a moderate, and he has condemned terrorism. And here's what Rauf actually said about Hamas: