I would never suggest doing that if it was a security-related issue. I'm talking about, for example.... Sometimes an officer might have a question about somebody's job reference letter, an education diploma or maybe their English or their French is not quite at the standard that it should be, so they maybe earmarked that for an interview situation. Or maybe it's a marriage case and they're not 100% convinced about the genuineness of the marriage.
In those cases, they're not really sure and they don't have massive concerns, but at the same time they would normally interview them. I'm saying, if it's in the grey zone, give them the benefit of the doubt and just push it through.