It would be interesting to be able to study it. As far as bilingualism is concerned, some bilingual countries have based their bilingualism on territorial models. They have different languages in different regions, as is the case in Belgium and Switzerland.
Evidence of meeting #2 for Official Languages in the 43rd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was amendment.
A recording is available from Parliament.