The bill makes it extremely difficult to release any detained undocumented person back into America if they have been arrested under suspicion of theft.
Below is a detailed—but old—discussion from April 2024. I'm still looking for a more recent breakdown. Let me know if you find one, I'll update this when I wake up
https://www.lexisnexis.com/community/insights/legal/immigration/b/insidenews/posts/the-proposed-laken-riley-act-is-even-worse-than-it-seems
4th Reich