The Borderline
What 51 per cent in Anchorage says about the USMCA review
The relationship that used to be muscle memory is now a file with a clock on it — the USMCA review, seen from both sides of the border.
Sophie Tremblay · Sep 10, 2026
ST
Canada–U.S. Correspondent
Sophie Tremblay
Sophie Tremblay is the bureau’s Canada–U.S. correspondent, covering tariffs, USMCA, autos, dairy and the embassy circuit.
236 stories in the Washington archive
Recent work
Maine Gov. Janet Mills on the effect the U.S.-Canada trade war will have on the state
Sep 10, 2026
A quiet bargain over the auto rules of origin
Sep 9, 2026
In Anchorage, a dairy flare-up weaponizes the map
Sep 8, 2026
The continental week Washington isolates a dairy flare-up
Sep 7, 2026
Bill 4032 and the problem of dollar-for-dollar tariffs
Sep 6, 2026
The strategic petroleum rider hiding inside the USMCA review
Sep 5, 2026
The file
The Borderline
What 46 per cent in Grand Rapids says about cross-border data rules
The relationship that used to be muscle memory is now a file with a clock on it — cross-border data rules, seen from both sides of the border.
Sophie Tremblay · Sep 4, 2026
The Borderline
Canada’s stake in steel and aluminum duties just got larger
The relationship that used to be muscle memory is now a file with a clock on it — steel and aluminum duties, seen from both sides of the border.
Sophie Tremblay · Sep 3, 2026
The Borderline
What 41 per cent in Fresno says about dollar-for-dollar tariffs
The relationship that used to be muscle memory is now a file with a clock on it — dollar-for-dollar tariffs, seen from both sides of the border.
Sophie Tremblay · Sep 2, 2026
The Borderline
The USMCA review: the view from the border
The relationship that used to be muscle memory is now a file with a clock on it — the USMCA review, seen from both sides of the border.
Sophie Tremblay · Sep 1, 2026
The Borderline
The northern border stays late on cross-border data rules
The relationship that used to be muscle memory is now a file with a clock on it — cross-border data rules, seen from both sides of the border.
Sophie Tremblay · Aug 31, 2026
The Borderline
K Street stays late on the embassy channel
The relationship that used to be muscle memory is now a file with a clock on it — the embassy channel, seen from both sides of the border.
Sophie Tremblay · Aug 30, 2026
The Borderline
Sioux Falls cannot look away from the auto rules of origin
The relationship that used to be muscle memory is now a file with a clock on it — the auto rules of origin, seen from both sides of the border.
Sophie Tremblay · Aug 29, 2026
The Borderline
Fresno cannot look away from cross-border data rules
The relationship that used to be muscle memory is now a file with a clock on it — cross-border data rules, seen from both sides of the border.
Sophie Tremblay · Aug 28, 2026
The Borderline
Foreign Relations turns to the auto rules of origin as Manchester watches
The relationship that used to be muscle memory is now a file with a clock on it — the auto rules of origin, seen from both sides of the border.
Sophie Tremblay · Aug 27, 2026
The Borderline
The last-minute week Washington weaponizes cross-border data rules
The relationship that used to be muscle memory is now a file with a clock on it — cross-border data rules, seen from both sides of the border.
Sophie Tremblay · Aug 26, 2026
The Borderline
New Brunswick’s energy corridor confronts the softwood file
The relationship that used to be muscle memory is now a file with a clock on it — the softwood file, seen from both sides of the border.
Sophie Tremblay · Aug 23, 2026
The Borderline
The expensive week Washington weaponizes the softwood file
The relationship that used to be muscle memory is now a file with a clock on it — the softwood file, seen from both sides of the border.
Sophie Tremblay · Aug 23, 2026
The Borderline
Bill 3852 and the problem of the embassy channel
The relationship that used to be muscle memory is now a file with a clock on it — the embassy channel, seen from both sides of the border.
Sophie Tremblay · Aug 22, 2026
The Borderline
K Street stays late on the auto rules of origin
The relationship that used to be muscle memory is now a file with a clock on it — the auto rules of origin, seen from both sides of the border.
Sophie Tremblay · Aug 20, 2026
The Borderline
Langley stays late on the softwood file
The relationship that used to be muscle memory is now a file with a clock on it — the softwood file, seen from both sides of the border.
Sophie Tremblay · Aug 19, 2026
The Borderline
The quiet week Washington frays a dairy flare-up
The relationship that used to be muscle memory is now a file with a clock on it — a dairy flare-up, seen from both sides of the border.
Sophie Tremblay · Aug 18, 2026
The Borderline
A continental bargain over the softwood file
The relationship that used to be muscle memory is now a file with a clock on it — the softwood file, seen from both sides of the border.
Sophie Tremblay · Aug 17, 2026
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