Kammala jumla mai zuwa: A cikin 1949, tsohon lauya na shari'o'in Kotun Koli da yawa, St-Laurent ya kawo ƙarshen aikin da ake kira da shari'ar shari'ar Kanada zuwa Kwamitin Shari'a na Privy Council na Burtaniya, yana mai da Kotun Koli ta Kanada mafi girman hanyar da ake da ita na roko na shari'a ga mutanen Kanada. A waccan shekarar, St-Laurent ya yi shawarwari da Dokar Arewacin Amurka ta Burtaniya (Lamba 2) Dokar, 1949 tare da Burtaniya wanda ya 'ƙaddara' tsarin mulkin Kanada, mafi mahimmanci yana ba Majalisar Kanada ikon gyara sassan tsarin mulki. Hakanan a cikin 1949, bin
biyu referendums a cikin lardin, St-Laurent da Firayim Minista Joey Smallwood sun yi shawarwari game da shigar Newfoundland cikin Confederation.