Spotted while driving through northern rural Michigan

It's not. It's the OG US flag designed by Betsy Ross, back when there were only 13 States (it has 13 stars): https://en.m.wikipedia.org/wiki/Flag_of_the_United_States#/media/File%3ABetsy_Ross_flag.svg
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Not sure what they're trying to say with it though.

That makes more sense. For a minute there i was worried Texas wanted to secede and join the European Union.