In the House of Commons on December 13th, 1999. See this statement in context.
ReferendumsOral Question Period
December 13th, 1999 / 2:20 p.m.
Saint-Laurent—Cartierville Québec
Liberal
Stéphane Dion LiberalPresident of the Queen's Privy Council for Canada and Minister of Intergovernmental Affairs
Mr. Speaker, the answer is no.
The draft bill fully respects the rights of the National Assembly, which can ask any question it wants to Quebec voters. However, it is not just any question that can lead to negotiations on secession.
This is what the Supreme Court of Canada said and it only makes sense.
See context to find out what was said next.