I knew a women in the 90s who was going to stay when her yr as an Aupair was up
See, if you look up the data on overstays - and I don't feel like looking them up now, but it's kind of like, we get in tens of millions of entries each year and we keep track of them as they come and go. And here I thought they were terrible about it; whenever I went abroad, I had to let authorities know all the time where I was, like every few days or once a week. I had to check in. And I was under the impression that we were just terrible about it.
And the numbers tell a different story - their error rate is less than 2%. OF that fraction, most are Canadians. Next is usually Mexican, but the Canadians have outnumbered Mexicans - and everyone else - by a huge amount. So how come we're not up to our ears in illegal Canadians? Well because they probably went home and they went home via a route we don't track or account for. In fact, there's a high likelihood that THAT accounts for most of the Canadians, because we just don't have that many illegal aliens from Canada.
So why does anyone use this same metric for entries from - well, EVERY OTHER COUNTRY where there are visa overstays? Bear in mind, the "number" of visa overstays is just that - a number. As in, we know about this many coming in, and this many going out. So why are most of the Canadians assumed to have gone back - but - no one else does? Make sense?