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How can you prevent the First Red Scare with a POD after 1914? Or maybe more importantly, can you prevent the Red Scare with a POD that late?
Maybe if Charles Hughes doesn't lose Hiram Johnson's endorsement in 1916 allowing Hughes to win in California and get Hughes a narrow victory electorally even if he loses the popular vote. Would there likely be a Sedition Act of 1918 with President Hughes? Or anything similar to the Palmer Raids?