It all depends on whether Parliament wants the tariffs gone so badly that they’ll back bad moves by Carney (technically, even the DST hasn’t been repealed yet, because Carney doesn’t have the authority to do that by himself—it’s been paused, but it’s still law until Parliament reconvenes and votes on it). Write your MP. Make it clear to them that you’d rather have tariffs than give in to the US on any of this.