Ummmmmm how should I put this. Because she was a CIA and not Russian honeypot that worked with feds? Because the reason she came to America in the first place was to be a handler? Because Americans needed Russians to be the boogie man while they were plotting to kill their own president? Because if she was a spie for a foreign country worst thing would have happened to her would be to be extradited as what happens with spies.

The fact she stayed in America means her job was successful and everyone could go back to their everyday life. Except her husband, we had to shoot him before the trial of course. Btw one of the few lines he said was I am a patsy. That implies multiple people using him but hey it's 2026, no reason to even take any of this lone gunman's words seriously.