LAS VEGAS — A judge in Las Vegas has decided to dismiss criminal charges against a Nevada rancher and his sons accused of leading an armed uprising against federal authorities in 2014. Chief U.S. District Judge Gloria Navarro signaled when she declared a mistrial last month that she might dismiss the case outright against 71-year-old Cliven Bundy, sons Ryan and Ammon Bundy, and Montana militia leader Ryan Payne. The judge severely criticized prosecutors for what she called “willful” violations of due process rights of defendants, including failing to properly turn over evidence to their lawyer. But she gave the government a chance to submit written documents opposing dismissal of all charges. The Monday decision is sure to reverberate among states’ rights advocates in the Western U.S., where the federal government controls vast lands that some people want to protect and others want used for grazing, mining and oil and gas drilling. The tense armed standoff outside Bunkerville, about 80 miles northeast of Las Vegas, stopped a federal Bureau of Land Management roundup of Bundy cattle from public land including what is now Gold Butte National Monument. About three dozen heavily armed federal agents guarding corrals in a dry riverbed faced hundreds of flag-waving men, women and children calling for the release of some 400 cows.