Larry, I think a reason not mentioned for the decline in waterfowl hunting in Canada is that the countryside is being hollowed out, there are no longer people living in many of the wide spaces. Buying land for $5000/acre doesn't appear to be a good investment with lots of birds and accessible land up here.
As for the snafus and unreasonable security at the border, it cuts both ways. In those places where medical facilities are traditionally used on your side of the border, guards are stopping Canadian ambulances with flashing-light police escorts. Cooler heads should prevail over time.
Keeping a heritage, the only answer is taking a kid and making it the experience described in earlier posts. I had no luck with my children or grandsons but hit the jackpot with my granddaughters. You may find, as I did, that girls are more interesting and fun in camp. I think we tend to be harder on boys.