SANTA FE, New Mexico — President Joe Biden said Saturday he was escalating federal assistance for New Mexico as it faces its largest wildfire in recorded state history. The fire began with prescribed burns that were set by the U.S. Forest Service, a standard practice that’s intended to clear out combustible underbrush. However, the burns spread out of control, destroying hundreds of homes across 500 square miles since early April, according to federal officials. “We need to be sure this doesn’t happen again,” Biden said during a visit to an emergency operations center in Santa Fe. …The president said the federal government would cover the full cost of the emergency response and debris removal, a responsibility that was previously shared with the state government.