Yes. Fraud in an immigration application can void citizenship and clear the way for deportation or extradition. But what Durbin and Coburn re talking about is something different, trying these cases in U.S. courts.
I'm not sure that would be constitutional -- trying someone for an act that was not a crime when an act was committed is ex post facto law, and that's expressly prohibited under the Constitution. Some Americans refused to participate in the Nuremberg tribunals due to constitutional concerns, but for most of the last half-century, the consensus has been that it's legal for the US to extradite to another country or to an international tribunal under theory. If the crime wasn't committed by an American, against an American or within American jurisdiction, the jurisdiction of US courts seems a little dubious to me.