IN Italy there’s a little desk behind the cashiers and it’s split in half so while you fill your bags using one half the next client uses the other half. The amount of useless jobs in the states always amazes me, but then you look at the unemployment rate and everything becomes less useless ...
The US has this depending on the establishment. The chain "Adli" (German in origin I think, but they're common in the US) doesn't have baggers, they just have a counter past the checker and you are expected to bag your own groceries. I'm also pretty sure they require you to bring your own bags too, though, so baggers wouldn't make much sense.