Anti-Semitism? Try common sense.
While the U.S. does allow non-U.S. citizens into our military, what is bothersome about this story is that a person with so-called dual citizenship even had a security clearance in the first place. The U.S., to my knowledge, does not recognize "dual citizenship". If you can't renounce one citizenship or the other, then your loyalties are divided. I would apply that to anyone who has U.S. citizenship without formally renouncing their old citizenship status, because the oath of citizenship requires you to renounce allegiance to all other countries. People who maintain dual U.S. (insert other country here) citizenship have broken their U.S. citizenship oath, so should not get security clearance to begin with, in my opinion. I don't care what the other country is.