General Order No. 11

Check out General Grant's "General Order No. 11"
This was to expel all the Jews from Tennessee, Mississippi, and Kentucky. Thankfully, this order was immediately repealed by Lincoln, with characteristic eloquence:

Lincoln expressed surprise that Grant had issued such a command and stated his conviction that “to condemn a class is, to say the least, to wrong the good with the bad.” He drew no distinction between Jew and Gentile, the president said, and would allow no American to be wronged because of his religious affiliation.

Grant later won the presidency, partly by winning the Jewish vote.