EDIT I'm not going to do your legal homework for you, but this is South Carolina, for example. As stated above, each of the 50 United States has various laws and regulations with regards to arrest and criminal records. Violate those laws at your own risk, but if a lawyer is not being involved in this project on an ongoing basis, I highly recommend anyone to avoid: https://www.scjustice.org/criminal-records-come-back-haunt-e...
That's just about respecting expungement (30 day notice must takedown). If you improperly record or transcode the data from the scrape and that results in someone being attributed to something that the record never showed, you are subject to full weight of defamation lawsuits. If you unwittingly expose someone's private information that is involved in witness protection, for example, you can be subject to legal and civil penalties: https://www.gsa.gov/reference/gsa-privacy-program/rules-and-...