The presidential aide faced questions from students about allegations that he is a member of an anti-Semitic Hungarian group and White House infighting.
The president’s envoy to the region has made economic stimulus in the Palestinian areas a key component of efforts to create the climate for renewed peace talks.
The Bend the Arc petition says it recognizes the tradition of presidents speaking at Days of Remembrance events, but adds "this is not a normal president and this is not a normal moment."