Perhaps to display a level of balance and to avoid allegations of bias it might be interesting to invite a victim of terrorism carried out in the name of Islam say a survivor of the London bombings ?

In addition how about asking the US Embassy to pass you the moving and thought provoking video made to remember the life and last moments of wheelchair bound US tourist Leon Klinghoffer thrown from the Achille Lauro cruise ship by Islamic terrorists. The Palestinian terrorist Abul Abbas who carried out this cowardly attack on a disabled old man was captured as a direct result of information gained at Guantanemo Bay.

Those considering visiting here might be interested in the "teachings" of Kamal Helbawy.
Helbawy appeared at a conference of the Muslim Arab Youth Association in December 1992. I was there. And here are excerpts from the speech he made recorded on videotape:

“Do not take Jews and Christians as allies, for they are allies to each other.”
“O’Brothers, the Palestinian cause is not a conflict of borders and land only. It is not even a conflict over human ideology and not over peace. Rather, it is an absolute clash of civilizations, between truth and falsehood. Between two conducts – one satanic, headed by Jews and their co-conspirators—and the other is religious, carried by Hamas, and the Islamic movement in particular and the Islamic people in general who are behind it.”

In 1991, Helbawy spoke at a conference hosted by the Islamic Committee for Palestine, a front group that was headed by convicted Palestinian Islamic Jihad (PIJ) operative Sami al-Arian. Other speakers at the event include Specially Designated Terrorist and current General Secretary of PIJ, Ramadan Abdullah Shallah, the notorious Egyptian “Blind Sheikh,” Omar Abdul Rahman (spiritual leader of the 1993 attack on the World Trade Center, currently serving a life prison sentence for his role in a plot to blow up New York City landmarks), and PIJ founder and spiritual leader Abdel Aziz Al Awda.

Helbawy’s radicalism and support for terrorism (and terrorists) is both longstanding and well documented.