The FBI has cut staffing in an office focused on domestic terrorism and has scrapped a tool used to track such investigations, in a shift that could undermine law enforcement's ability to counter white supremacists and anti-government extremists, according to sources familiar with the matter. The moves, sources said, are an indication that domestic terrorism investigations, which in recent years have largely involved violence fueled by right-wing ideologies, may be less of a priority under FBI Director Kash Patel, a prominent critic of the effort.