I'm trying to recall the particular conversation you're referring to, but certainly there are scenarios within which those kinds of questions are being explored, such as the extent to which someone's identity could be stolen to identify them as a terrorist actor.
There are many plausible scenarios. I'm not sure how facial recognition technology might play into that specifically, but this is where scenario planning and those sorts of techniques can be very useful to draw in the kinds of lines of inquiry that you are concerned about.