As a "Common Carrier" Delta can no more exclude an Israeli than they can an Arab. They have a requirement under law to take all that show up as required by their authority as a common carrier as regulated by the Department of Transportation (DOT). It is for the same reason that we cannot profile arabs from 20 to 40 years old and have to search grandma as well, even though we know Grandma isn't the threat.
As to Pontious's rediculous statement:
People who live in glass houses shouldn't fire bullets at kids who throw stones.
A closer statement to the truth would be, Arab children throwing stones shouldn't use their bodies as human shields for snipers thus rightfully drawing Israeli army gunfire.
Cheers
Wino