Final answer:
All three branches of the U.S. government are involved in the formation and regulation of military commissions: the Executive branch initiates, the Legislative branch legislates and oversees, and the Judicial branch interprets and ensures constitutionality.
Step-by-step explanation:
How the Three Branches of Government Interact in the Formation of Military Commissions:
The formation of legitimate military commissions involves all three branches of the U.S. government. The Executive branch, led by the President as the Commander in Chief, has the authority to establish military commissions under its war powers. However, the Legislative branch has the responsibility for enacting laws that frame the operation of military commissions, as demonstrated by the Military Commissions Act of 2006.
This act was a response to the Supreme Court's ruling in Hamdan v. Rumsfeld, which declared the military commissions set up by the Bush administration as illegal. The Judicial branch has the power to rule on matters of constitutionality related to military commissions, as it did in both the Hamdan v. Rumsfeld case and when it later struck down parts of the Military Commissions Act in 2008, thereby affirming the habeas corpus rights for detainees.