The US Supreme Court ruled them as inadmissible in the early 1900s. It's a fear techno tool that scares people and makes them uncomfortable when being grilled by that big scary fucker who isn't even recording the results.

It's being pushed by the same group of people who want you to believe fingerprints are unique to every person. That whole thing was pushed to convict a nigger of murder the first time it was allowed. DNA is a wonderful thing, except where they work to corrupt the shit out of how the results are reported or you just get someone who says everyone is guilty (with a 10+ years of being employed at that lab, think about that one).

All of this to get around actual investigative work which takes time. But someone's gotta go to that privately funded prison and we don't care if we didn't get the actual murderer (CASE CLOSED! WOOHOO! +1 for my rep on convictions!). Fucking jews.