Using the Clean Air Act, by the administration's own admission, is not the cheapest or most effective way to cut emissions.

ECONOMIST: Climate-change policy

Tickets to the afternoon celebration cost 120 Danish krone, but the fee also covers a morning open air church service, a festival for families and admission to the Lincoln Log Cabin, a cedar log cabin within the park that serves as a museum for the history of the Danish emigrant experience.

BBC: Celebrate American independence in Denmark