Other business owners in the town said they supported Mr Schuenemann’s right to run his store the way he wanted.
April Serwe, who owns local bar PJ Magoos, said: ‘He posted it on the door so you see it before you walk in. You don’t have to walk in if you don’t agree with it.’
He also won praise from many people on social media who argued that ‘if you don’t like it, don’t eat there’.
Melissa Rose said: ‘The sign on the door is perfect’.
‘It’s about time someone stands for the non whiny Americans’, Sandy Roberts added.
Mary McSweeney Lanese wrote on Facebook: ‘Your franchisees have the right to post any signs they want…and not being “politically correct” is even more of a reason to shop in those stores. Sick and tired of people being offended by the least little thing.
Leslie Jones Loeffelholz added: ‘I love it! This is the land of freedom! He has every right to post that sign on his business! If you don’t like it, don’t eat there!’

In a statement seen by CBS, Dairy Queen said: ‘American Dairy Queen Corporation does not encourage our independently owned and operated franchisees to post non-business related messages in their locations or on their external reader boards.
‘This sign expresses the views of this independent owner only and does not speak for ADQ Corporation or any of our other independent franchise owners.
‘We expect our franchisees and employees to treat every person who walks through our doors with the utmost dignity and respect. Nothing less is acceptable.’