This is Planet Money from NPR.
Susan Weber has spent her whole life in Montana, and she loves everything about it.
The mountains, prairies, the plains.
The smell.
You can smell the air.
You can smell the flowers.
The wildlife.
Occasionally a little fox will run across the road.
Susan grew up here on the Blackfeet Indian Reservation.
She's a member of the Blackfeet Nation.
From her back porch,
she's got the Rocky Mountains to the west and the Great Plains to the east.
And to the north is Canada.
The border is a short drive away.
Well, it's just an imaginary line, right?
Can't even see it?
No, you don't need to see it.
And for most of her life, that line really did feel imaginary.
The members of Susan's tribe are part of the Blackfoot Confederacy,
and they live on both sides of the border.