A Marine discharged in 2021 on an “other than honorable discharge” pleaded not guilty on Monday to federal firearms charges, but it was his alleged membership in a neo-Nazi group that led a judge to order him to remain behind bars. Matthew Belanger was arrested in June 10 and charged with making false statements in order to use a straw man — an unnamed New York police officer — to purchase an assault rifle and a handgun while he was stationed in Hawaii. But in a July 14 court memo , federal prosecutors said that Belanger had been the target...