[2][3] As mayor, Meilleur opposed the decision, announced in December 2006 by the government of Prime Minister Stephen Harper, to return 4,450 hectares of farmland expropriated in 1969 to build Mirabel airport.
[4] Meilleur and his wife Ritha Cossette each served as president of the ADQ.
Meilleur ran for a seat at the National Assembly in 1994 in the district of Argenteuil.
Liberal candidate Régent Beaudet won the election with 43% of the vote.
In 2007, they expressed disappointment over the fact that the Liberals lost their majority in the legislature and claimed that they had made the decision to stay out of provincial politics.