Excluded by God and Queen

It seems some new Canadians are having crises of conscience with the Canadian Citizenship Oath. The oath reads, “I swear (or affirm) that I will be faithful and bear true allegiance to Her Majesty Queen Elizabeth II, Queen of Canada, Her Heirs and Successors, and that I will faithfully observe the laws of Canada and fulfil my duties as a Canadian citizen.” 

The problem lies with the Queen bit.