The communities functioned as one with residents flowing freely across the border. The McLaren brothers agreed to sell in the Carson townsite to O.B. Nelson, who operated a store on the US side, on the condition of opening a Carson store. However, an October 1897 court case revealed that the store, which straddled the
Canada–US border, rested on Canadian land not owned by the McLarens. Either ownership rights and/or government concerns regarding the collection of duties upon merchandise sales soon prompted the store closure at that location. A year later, the mail was being routed via
Marcus. In November 1897, the Reservation Record, the local newspaper, was appointed special US customs inspector at Nelson (Danville). The primary role was to collect duties on lumber exports from BC, pending a decision whether to make a permanent appointment. Weeks later, L.K. Boissonault was appointed US customs inspector at this location. In August 1900, the customs house, then situated in the town, was one of the buildings damaged by a fire. In 1902, A.E. McAuley became the inaugural Canadian customs officer at Carson, primarily focusing on the new rail traffic. That year, Frank Sherwood, a newspaperman, was also appointed as a US customs inspector. By 1914, the Grand Forks–Danville road was
macadamised. A 1929 grass fire destroyed, the former Carson customs office and other pioneer buildings on the east shore of the river. In 1948, Highway 41 was paved. In 1988, the first joint US-Canada border inspection facilities (present structures) opened along the highway on the west shore, replacing the US brick inspection station from the 1930s and the Canadian one from 1950 at that location. The Canadian border hours are daily from 8:00am to 8:00pm (travellers) and from 8:30am to 4:30pm (commercial). In 2018, the US reduced the previous border hours of 8:00am to midnight. The current US hours are daily from 8:00am to 8:00pm. ==See also==