The point is you might still be considered to be interfering with the investigation, should they find out. Everything I've ever read about topic stresses that

The point is you might still be considered to be interfering with the investigation, should they find out. Everything I've ever read about topic stresses that you should be absolutely truthful with a border officer. At least in the US, lying to one is a serious offense. Your post encourages hiding behind semantics and technicalities- and while those might save you in a courtroom (if you have a good lawyer), they won't save you when you're face to face with an angry border agent who just discovered your ruse. Again, this is why I don't use this method. It didn't work on my parents when I was a kid, and I don't think it will work in this case either.