Niagara Falls is one of the wonders of the world, and a point of Canadian national pride. The Falls lie on the border with the United States, however the more impressive Horseshoe Falls are within Canada's jurisdiction. While Canadians take pride in ownership of the better share of the famous waterfall, recent incidents at the nearby border crossing with the U.S. call into question how much control Canada really holds over its famous landmark, and who may enter the country to see it.