She scored the game-winning shootout goal to win the gold medal for Team USA at the 2018 Winter Olympics against Canada after her twin sister Monique tied the game near the end of regulation.

Lamoureux-Davidson also won silver medals for the United States women's national ice hockey team at the 2010 and 2014 Winter Olympics.

She competed for a year with the Professional Women's Hockey Players Association, a worker's union pushing for equality in the sport, and retired from playing in 2021.

[4] The sisters also founded the Lamoureux Foundation, which funds educational and extracurricular programs for children in need, primarily in their home state of North Dakota.

Their transfer to their home state was attributed to the fact that North Dakota hired Brian Idalski, a former coach at the USA Hockey Development Camps.

Lamoureux also participated as a two-time member of the United States Women's Select Team for the Four Nations Cup (1st 2008, 2nd 2006).

[7] Jocelyne and her sister Monique were the first set of twins ever to play women's ice hockey in the Olympics.

[12] In the opening match of the 2012 IIHF World Women's Championships, Lamoureux scored three goals while assisting on three others in a 9–2 win over Canada.

Goaltender Maddie Rooney then stopped Meghan Agosta to seal the gold medal for Team USA, their first in twenty years.

[9] Pierre-Paul played for the University of Manitoba and is a student-assistant coach for the North Dakota hockey team.

Mario skated for Team USA at the 2006 Viking Cup and played four years for North Dakota.