More can always be said, but this question has been asked and answered in this sub before:
/u/sowser explains that enslavement in the U.S. was limited to black people. There were no enslaved white people.
/u/freedmenspatrol addresses the question of black enslavers in the U.S.
Also relevant is the section of the FAQ about the myth of Irish slavery as addressed in answers by /u/Irishfafnir and sowser, among others. The Irish were not enslaved.