I have seen this noted on several different sources (I am not sure about the place I am qouting) but why do they NOT want Obama to come?
Hamas warns Obama: Dont visit Temple Mount
http://endtimeheadlines.wordpress.com/2013/03/02/hamas-warns-obama-dont-visit-temple-mount/
Specifically, the arabs do NOT want obama to enter the Temple Mount area with JEWS. They say it challenges their (waqf,) authority over the entire area. They also want him to visit the mosque without Jews, but to enter by the Lion’s Gate which they control.