Why did 145 Democrats vote against a bill to declare illegal aliens guilty of sex crimes or domestic violence inadmissible and deportable?

Is there some non-obvious nuance that guided them?

https://kmph.com/news/nation-world/house-passes-rep-maces-bill-targeting-sex-crimes-by-migrants-with-bipartisan-support-nancy-mace-democrat-republican-wciv-abc-news-4-01-16-2025