Gwinnett county is home to many immigrants and other newcomers, and how it votes could be decisive for Congress

Johanna Park might just be an ambassador for Gwinnett county, Georgia, one of the 10 most ethnically diverse counties in the United States.

Park owns Cafe Amico at Suwanee Town Center, one of her three Italian coffee shops in the area just north of Atlanta. She was born in Korea and lived much of her life in Argentina and Peru. She’s been in Gwinnett for more than 20 years, part of an early wave of Korean immigration that’s built Korean American car dealerships, banks, insurance agencies, supermarkets and restaurants like her own. It’s also a population that’s increasing in influence and not just numbers.