Final answer:
The act mentioned was not completely comprehensive due to legal loopholes exploited by big business' lawyers. It also did not provide protection for Americans and Black people were still considered property. There are ongoing debates about whether the US government fulfilled the act's fundamental purposes.
Step-by-step explanation:
The act mentioned was not completely comprehensive for several reasons. Firstly, big business' lawyers were able to find legal loopholes in the legislation, which undermined its effectiveness. Additionally, the act did not provide protection for Americans and Black people were still considered property without any citizenship rights. Furthermore, over time, there were debates and challenges regarding the fulfillment of the act's fundamental purposes by the US government.