GRAND FORKS — Grand Forks police and the FBI on Thursday visited the home of Jodi Carlson, a leading opponent of a new corn mill to be owned by the China-based Fufeng Group, following up on a social media post quoting the Declaration of Independence that mentioned the overthrow of the government. The authorities ultimately found no cause for concern, a police report states. The incident has provoked an angry response from opponents of the corn mill project, many of whom are part of the “Concerned Citizens of Fufeng Project in Grand Forks” group where the activity took place. “This...