(NEWSER) - Fewer Americans visited Canada last month than at any time since record-keeping began in 1972, as new passport controls and a weak US dollar kept tourists away. One-day car trips dropped 26% from May to June, and US tourists in Canada fell to half their number 5 years ago. The dramatic drop has dealt a blow to the tourism industry on both sides of the border, reports the Globe and Mail. Only 30% of Americans have a passport, which is now required for driving north of the border. More»