The Governor-General was the highest ranked office in the North American Union. The Governor-General represented the King-Emperor (or Queen-Empress) of Britain and the Empire in the Union. Notable Governors-General oversaw the establishment of protected Red Indian nations within the Union, westward expansion of Union domains to the Pacific Ocean, the abolition of slavery and the establishment of racial equality, the defeat of Franco-Spanish and Russian conspiracies to harm the empire from without, and the suppression of white supremacist uprisings from within. The Governor-General's residence in Victoria was known as America's Number 10 after its London model.
The exact powers of the Governor-General of the NAU aren't thoroughly defined. The King-Emperor appoints the G-G, but conversely, the G-G is aware of the opinions of the voting public. The G-G appears to exercise powers consistent with an OTL prime minister rather than an OTL governor-general.
List of known Governors-General
George Washington, the first(?) Governor-General, served in the late 18th century.
Stephen Douglas, served during the mid 19th century, oversaw the opening of the west
- President of the United States, the head of both state and government of the United States. Two of the known GGNAU were POTUS in OTL.
- Prime Minister of the United Kingdom, the head of government of the United Kingdom. The GGNAU has some aspects in common with this office, including an apparently parliamentary system, and the naming of their respective official residences.