The Borderline
Des Moines cannot look away from 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 · Apr 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
Dollar-for-dollar tariffs: the view from Capitol Hill
Apr 8, 2026
Canada’s stake in dollar-for-dollar tariffs just got larger
Apr 7, 2026
In Green Bay, the softwood file tests the map
Apr 6, 2026
Washington stays late on a dairy flare-up
Apr 5, 2026
Judiciary turns to the embassy channel as Allentown watches
Apr 4, 2026
Foggy Bottom stays late on a dairy flare-up
Apr 3, 2026
The file
The Borderline
The West Wing stays late on 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 · Apr 1, 2026
The Borderline
A last-minute bargain over 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 · Mar 31, 2026
The Borderline
Quebec’s aluminum towns confront 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 · Mar 31, 2026
The Borderline
Canada’s stake in cross-border data rules just got larger
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 · Mar 30, 2026
The Borderline
What 46 per cent in Portland, Maine 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 · Mar 28, 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 · Mar 27, 2026
The Borderline
Bill 2100 and the problem of 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 · Mar 26, 2026
The Borderline
The mail-in voting statute hiding inside 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 · Mar 25, 2026
The Borderline
Cross-border data rules: the view from K Street
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 · Mar 24, 2026
The Borderline
Canada’s stake in a dairy flare-up just got larger
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 · Mar 23, 2026
The Borderline
The softwood file: the view from Foggy Bottom
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 · Mar 21, 2026
The Borderline
Chattanooga cannot look away from 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 · Mar 20, 2026
The Borderline
Portland, Maine cannot look away from 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 · Mar 19, 2026
The Borderline
The continental week Washington hardens 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 · Mar 18, 2026
The Borderline
The sanctions package aimed at Tehran hiding inside 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 · Mar 17, 2026
The Borderline
Portland, Maine cannot look away from 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 · Mar 16, 2026
The Borderline
Quebec’s aluminum towns confront 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 · Mar 15, 2026
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