Time is running out on a deal to secure the largest expansion of Yosemite National Park since 1939, and one man appears to be standing in the way: local congressman Tom McClintock.

Declaring his distrust in the National Park Service, the tea party Republican from Granite Bay is at odds with local Republican state legislators and the Mariposa County Board of Supervisors over efforts to add a scenic parcel of land on Yosemite’s western boundary now owned by a Bay Area conservation group. The deal is even becoming a campaign issue in this rugged part of California as McClintock fights for re-election against…