Real Change: A New Plan For a Strong Middle Class (page 44)

"Up to $83.3 million over five years, starting in 2016–17, to provide free admission for all visitors to national parks, national marine conservation areas and national historic sites operated by the Agency in 2017, the 150th anniversary of Confederation, and to provide free admission for all children under 18 years of age, beginning in 2018." ("Growing The Middle Class" Budget 2016-2017) 

"In 2017, admission to all national parks, national marine conservation areas and national historic sites will be free." (Building a strong middle class, March 22, 2017)