Tennessee was where the first private jail was opened at.
This is when states become a “laboratories for Democracy”. This means that while federal law may say one thing about a certain issue/policy, there is sometimes overlap in jurisdiction that allow states to go against the Federal Government. A benefit of states being laboratories for Democracy is that they are able to implement policies that they feel is best for citizens of their respected state. A quality example of this would be the legality of marijuana. While marijuana is still illegal at the federal level, many states (colorado, california, washington, etc) have decided that the consumption of marijuana is legal for recreational use, despite federal law that prohibits it.
Forensic scientists can use DNA profiles to identify criminals or determine parentage. Some potential challenges may be using wrong methods, the role of human error in interpreting the results.
