Americana: Presented by Matt Frei from Washington DC.
Like so much about this country, America's borders are record breakers.
To the north it enjoys the world's longest shared border.
And to the south, two thousand dusty odd miles that has the distinction of being the world's most frequently crossed international border.
For most Americans, it's a line that's being crossed far too many times.
So in a week that's seen Mexico's President in town, we'll hear from both the troubled far south west and a much less reported border dispute among the lush farmlands in Northern Vermont.
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