While the "National Parks Act" and the 1988 amendment emphasize ecological integrity, in practice Banff has suffered from inconsistent application of the policies. In 1994, the Banff-Bow Valley Study was mandated by Sheila Copps, the minister responsible for Parks Canada, to provide recommendations on how to better manage human use and development, and maintain ecological integrity. While the two-year Banff-Bow Valley Study was underway, development projects were halted, including the expansion of Sunshine Village, and the twinning of the Trans-Canada Highway between Castle Junction and Sunshine.