Just read it here: https://uscode.house.gov/view.xhtml?...edition=prelim

If you want the tl;dr version because you're lazy: criminal grounds (CIMT, prostitution, human smuggling, drug crimes, etc), terrorism, genocide, personally heiling Hitler during WW2, use of child soldiers, human smuggling (again), practicing polygamy, international child abduction, and unlawful voting.

Basically it's all the kiss of death inadmissibilities.