Maine and Vermont Republicans break with Trump over a tariff running $10bn a year

Fifty percent of roughly $20 billion is about $10 billion of duty a year if the volumes hold ^[1], and the volumes will not hold, so what Customs eventually books will come in under that; the shortfall is the more interesting number, or rather the harder one, because it is trade that simply does not happen and so appears on nobody's ledger as a cost.

Seventeen days sit between the American effective date and the Canadian one ^[2], the only stretch of this dispute in which the cost runs one way, and far too short a window for anyone to reroute a supply chain inside it. For a Vermont manufacturer whose largest export market by a wide margin is Canada ^[17], the question after that date is how much of the bill is recoverable in price, not which capital was at fault.

The lobster case is the cleanest arithmetic on offer. Almost half of Maine's fall catch crosses into Canada for processing ^[12], so price it as a round trip: 25 percent going north, and, if Washington answered with a matching charge on the processed product coming home, 1.25 times 1.25, or about 56 percent on the same animal ^[3]. Angus King's warning is precisely that compounding, that the processed lobsters could be taxed again when they are shipped back to the United States ^[12].

This is probably wrong, but the revolt matters less to a planner than its volume suggests. Phil Scott said in July that his view of punitive tariffs on Canada had not changed in two years ^[14]; he called the mid-August pause a hopeful sign while noting Vermont had a long ways to go ^[15]; the pause lapsed, and by late August he was describing the tariffs as taxes that raise costs for families, farmers and employers on both sides of the border ^[16]. Two years of consistent objection from a sitting Republican governor bought a pause and then the end of one. What Susan Collins adds is a price on it: a Republican in a competitive reelection race calling the policy a mistake ^[9], and telling Maine businesses that the on-again/off-again process is itself the cost ^[10], is evidence the tariff has become legible to voters. It is not evidence the schedule will move. Executives at the region's largest employers said much the same thing this week ^[2], and the duties took effect anyway.

It could run two other ways. If the break really turned on a single rate schedule for heavy trucks ^[6], a deal can reappear inside a fortnight and the border-state pressure will look like leverage that worked. If instead each capital is now committed to its own account of the final hours ^[1], the cheapest available action for either government is none, and permanent means what it says. My read breaks the moment Ottawa's September list slips without an American concession, because that would show the constraint binds on both sides of the line and the correct hedge is patience rather than paperwork. Until then, what a cross-border firm spends on origin documentation and pre-positioned inventory is capital it is not putting into capacity, and it sits on the books without ever turning into anything the firm can sell.