Jews were the main progenitor of slavery in the US. Thay also use racial tension and political destabilization in a country to encrease their own power. The star shouldn't be there.
America was as a whole, disastrously unaware of the jewish problem and even the people who dismantled jewish systems were evidently unaware that jews were behind them at all. Andrew Jackson should have kicked out all of the jews and barred entry after abolishing the central bank, but he didn't, probably because he didn't connect the dots. The only founding father who knew anything about the jews was Benjamin Franklin, courtesy of being the oldest, most experienced, and well traveled of them.
It's a consequence of living in a place that has almost none of them and jews almost existing as some fantastical group of people from myth. Coupled with americas founding puritans having weird views on jews as a whole. Was Jefferson Davis aware of the jewish question? Most likely not. Was Lincoln? Most likely not. Were both hostile towards systems owned and created by jews (Jefferson hostile towards jewish industrialist capitalism and banking, Lincoln towards jewish slavery and finance)? Yes they were. Were either aware that jews perpetuated these systems? Most certainly not, which is why the victory of one over the other was a disaster. Jefferson Davis was also against slavery, but that opinion was deeply unpopular and so he rarely brought it up.