Israel National News is giving three different scenarios, but the original claim seem the more logical (Muslim) reason of the three. They did not want Jews going inside and around the mosque.
(Israelis forget that normal countries with normal police arrest abnormal hotheads.)
Waqf Blocked Harper ‘because of Jewish Bodyguards’
Members of Harper’s entourage had made a preliminary tour of the Mount Sunday morning. The Waqf’s announcement that it would not allow the Jewish bodyguards in was made at the last moment, supposedly because the Waqf did not know earlier that some of the guards were Jewish.
Harper would not enter the Mount without the bodyguards and the visit was cancelled, according to a press statement by B’nai Brith Canada.
“It is a shame that the Prime Minister’s visit to the Kotel was marred after he learned that his security detail would not be allowed in to the Dome of the Rock because they are Jewish,” said Frank Dimant, CEO, B’nai Brith Canada. “B’nai Brith delegations have also faced moments of discrimination and harassment on previous missions. We have raised this issue with Canada’s Office of Religious Freedom. Equal access must be given to Jewish worshipers wishing to ascend the Temple Mount. This incident serves as a stark reminder of the religious discrimination going on at the hands of the Islamic Waqf responsible for administering the site.”