26
"There! Now the country can struggle with entrenched white supremacy for a few hundred years!"
(media.piefed.social)
Explanation: After the US Civil War, fought over the issue of race-based chattel slavery, President Abraham Lincoln was a supporter of a moderate plan for reunification known as the "10% Plan", wherein 10% of voters of former Confederate states would be required to swear loyalty oaths to the Union and to uphold the abolition of slavery before being readmitted to the Union. While this plan was opposed by Radical Republicans when it was proposed in 1863, it was used to successfully reintegrate Louisiana, Tennessee, and Arkansas during the Civil War.
Regardless of the plan's weaknesses, or whether it was meant more in the context of wartime uncertainty of the enthusiasm of the electorate to continue, when Lincoln was assassinated by a pro-slaver sympathizer, his Vice President took over. His VP, unfortunately, was chosen in 1864 as part of a unity ticket intended to bring together all supporters of the US Civil War against the 'peace platform' which proposed letting the South secede after 3 years of bloody warfare, and shared very little with Lincoln other than the belief that the South should remain part of the USA. Namely, Andrew Johnson was a noted and dedicated white supremacist, whose policies were absurdly pro-racism, and who was strongly opposed even by moderate Republicans.