I would just add that as a matter of principle, you're always questioning the significance of the consequences of taking away these rights. If those consequences are really material—and I would argue, in the case of citizenship as a meta-right, that they are really fundamental to any individual who is subject to revocation—then your procedural safeguards have to be very high. If they're not significant or they are somewhat immaterial, then you have more leeway. But certainly I agree with the notion that if we're talking about fraud and misrepresentation, the IRB does these cases all the time for permanent residency, so you might want to look at leveraging the expertise they already have in these sorts of issues for the purposes of citizenship.
On April 21st, 2016. See this statement in context.