</font><font color="blue" class="small">( It's odd they are protected in the US, in Canada people shoot them when in season. )</font>
You can hunt them in the States, too, in season. The problem is that the geese read the hunting regs too, and know when it is open season.
Maybe, if it's goose hunting territory, put up a really obvious fake goose blind with a water pipe sticking out to look like a gun barrel. That should attract game wardens, too.