The EPA is trying to cheat Navajo Indians by getting them to sign away their rights to future claims from the agency’s Gold King Mine disaster, tribal officials charged Wednesday, adding more to the administration’s public relations problems over the spill that threatens critical Southwest waterways. EPA officials were going door-to-door asking Navajo, some of whom don’t speak English as their primary language, to sign a form that offers to pay damages incurred so far from the spill, but waiving the right to come back and ask for more if their costs escalate or if they discover bigger problems, ......