A new study finds the five federally recognized tribes in Idaho contribute some $1.5 billion to the state’s economy every year. Another new study finds the economic impact of Mississippi Band of Choctaw Indians alone reaches $1 billion for that state’s annual total bottom line. Both studies echo similar research over the years in other states that show tribes are major players in their states’ economic viability. And the sources aren’t just gaming — categories like construction, tourism, government operations, and education are major economic contributors.