What are you talking about?
Rahm Emanuel has dual citizenship with Israel. He went there to serve during the first gulf war (but he says it was not in uniform). See his wikipedia entry, he doesn’t deny it
Rahm Emanuel holds both an Israeli citizenship and a US citizenship. Apparently this is not all that uncommon among the sons and daughters of the liberators of of Israel from the clutches of the Palestinians.
And that thing with the middle finger? He ran it through a meat slicer in a deli as a young man. Soon everybody was coming in, demanding the filling for a finger sandwich.