Which amendment involves due process of law for all citizens?

The 5th Amendment is integral to the concept of due process of law for all citizens. This amendment guarantees that no person shall be "deprived of life, liberty, or property, without due process of law." This means that the government must follow fair procedures before depriving an individual of their fundamental rights, ensuring legal rights are respected and upheld across the board.

Due process serves as a safeguard against arbitrary denial of rights, thus promoting fairness in legal proceedings. The inclusion of this principle in the 5th Amendment reflects the Founding Fathers’ commitment to the rule of law and the protection of individual rights within the judicial system. While the other amendments touch on various rights and protections, it is the 5th Amendment that specifically addresses due process, making it the correct choice in this context.