Donna Shalala, head of the University of Miami and the former U.S. Secretary of Health and Human Services under President Clinton, was detained for two hours at an Israeli airport upon her attempt to leave the country after a trip there by university presidents.
Shalala was the chancellor of the University of Wisconsin–Madison when I was a student there in the second half of the 1980s. I always knew she was a trouble-maker. :)
Shalala, of Lebanese descent, took the matter in stride and said she understood the Israelis' security concerns.