I was told by several travel agents that if a U.S. citizen has an expired U.S. passport and wants to travel from Israel to the U.S., he shouldn’t even bother going to the airport, they will not let him on the plane. This may be a new rule, but it is in effect. I know some people who tried anyway, and indeed, they were turned away until they received an emergency passport from the U.S. embassy.
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