The shadow Scottish secretary Margaret Curran is visiting Dumfries and Galloway and the Borders today.
With just weeks to go until the independence referendum, the Labour MP will be speaking about the potential effect that having a more formalised border could have on international trade.
The SNP are arguing any negative assertions are based on what they describe as "inaccurate data".
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Mainly dry and bright Sunday, some sunshine but cold
Frosty, icy start on Sunday with fog patches lingering in places. Away from the fog, some good wintry sunshine