If they knew of the views and votes of Lieberman and McCain they would have greeted them with...shoes (very offensive in Arab culture--as I read in US media)

"The congressmen were accompanied by US ambassador to Egypt, Margaret Scobey. During the tour, they met with several citizens and military police in the square. Lieberman wrapped himself with an Egyptian flag before handing it to one of the citizens in the square." (thanks Yasmine)