FLAGSTAFF, Ariz. (AP) — Calls are mounting for the federal government to close Grand Canyon National Park after a resident of the iconic park tested positive for the coronavirus and has been in isolation. Members of Congress and city, county and tribal officials have urged the Interior Department to approve a request from the park to close. The Park Service has been deciding whether to shut down individual sites on a park-by-park basis, in consultation with state and local health officials. The agency said Tuesday that no decision has been made. The man who tested positive lived at a dorm within the park and worked at a lodge run by a park concessionaire.