The move comes at a time when a customs dispute is ongoing between neighbouring countries.
Changing the name of Lake Ontario to Lake America is being considered because "we don't expect to have much to do with Ontario anymore," Trump writes on his Truth Social platform.
Tariff negotiations between the countries collapsed over the weekend, with the US imposing 50 per cent tariffs on a wide range of Canadian goods. Trump has threatened to raise them further, while the Canadian government has warned of countermeasures.
