Home Democratic presidential nominee Joe Biden talks with members of the United Steelworkers union in a supporter’s back yard September 09, 2020 in Detroit, Michigan. Democratic presidential nominee Joe Biden talks with members of the United Steelworkers union in a supporter's back yard September 09, 2020 in Detroit, Michigan.

Democratic presidential nominee Joe Biden talks with members of the United Steelworkers union in a supporter’s back yard September 09, 2020 in Detroit, Michigan.

DETROIT, MICHIGAN – SEPTEMBER 09: Wearing a face mask to reduce the risk posed by the coronavirus, Democratic presidential nominee Joe Biden talks with members of the United Steelworkers union in a supporter’s back yard September 09, 2020 in Detroit, Michigan. Biden is campaigning in Michigan, which President Donald Trump won in 2016 by less than 11,000 votes, the narrowest margin of victory in state’s presidential election history. (Photo by Chip Somodevilla/Getty Images)

Democratic presidential nominee Joe Biden talks with members of the United Steelworkers union in a supporter’s back yard September 09, 2020 in Detroit, Michigan.