The addition of the Fourteenth Amendment was necessary primarily to limit the powers held by the states, prevent unjust treatment, and ensure equal rights for all citizens.
After the Civil War, there was a significant concern about how newly freed African Americans would be treated in the Southern states, where discriminatory laws, known as Black Codes, were enacted to restrict their rights and maintain white supremacy. The Fourteenth Amendment aimed to provide a constitutional guarantee of equality and prevent states from denying any person, particularly previously enslaved individuals, the rights and protections afforded to them.
This amendment established citizenship for all persons born or naturalized in the United States and provided a broad definition of civil rights. It also included the Equal Protection Clause, which is vital in the ongoing struggle against discrimination and for the enforcement of civil rights. Thus, the Fourteenth Amendment plays a crucial role in limiting state power and promoting equality, making it a necessary addition to the U.S. Constitution.