G.R. No. 169777 , 169659, 169660, 169667, 169834, 171246. April 20, 2006.
SENATE OF THE PHILIPPINES, et al., BAYAN MUNA, et al., FRANCISCO I. CHAVEZ, ALTERNATIVE LAW GROUPS, INC., PDP-LABAN, and JOSE ANSELMO I. CADIZ, et al., Petitioners, vs. EDUARDO R. ERMITA, in his capacity as Executive Secretary, et al., Respondents.

FACTS

The Senate, through its committees, issued invitations to various executive officials, including military officers, to appear in public hearings concerning matters like the North Rail Project and alleged electoral fraud. Prior to these scheduled appearances, President Gloria Macapagal-Arroyo issued Executive Order No. 464, which required all heads of departments of the Executive Branch to secure the President’s consent before appearing before Congress. It also allowed officials to invoke executive privilege on questions affecting national security. Invoking this order, several invited officials, including AFP Chief of Staff Gen. Generoso Senga, did not attend the hearings.
Multiple petitions were filed assailing the constitutionality of E.O. 464. The petitioners, including the Senate, legislators, party-list organizations, and civic groups, argued that the order violated the constitutional provisions on the right of the people to information on matters of public concern, the legislative power of inquiry, and the principle of checks and balances. They contended it effectively allowed the executive to blanketly prevent officials from testifying without a valid claim of privilege.

ISSUE

Whether Executive Order No. 464 is unconstitutional for violating the legislative power of inquiry, the right to information, and the system of checks and balances.

RULING

Yes, Sections 2(b) and 3 of E.O. 464 are unconstitutional. The Court upheld the well-established legislative power of inquiry, inherent in the grant of legislative power under Section 21, Article VI of the Constitution , which is essential to informed lawmaking and the system of checks and balances. While the President has the power to invoke executive privilege, this power is not absolute. E.O. 464, however, effectively created a presumption of confidentiality for all appearances by executive officials before Congress.
Specifically, Section 2(b), which required prior presidential consent for such appearances, and Section 3, which allowed officials to simply invoke the order itself as grounds for non-appearance without specifying the privileged nature of the information sought, unduly expanded the scope of executive privilege. The ruling clarifies that a valid claim of executive privilege must be specifically invoked by the President herself or the Executive Secretary as her alter ego, not by a subordinate official. Furthermore, the claim must state the specific grounds (e.g., diplomatic secrets, national security) with particularity to allow for a judicial determination in case of conflict. By allowing a generalized claim, E.O. 464 impaired the legislature’s constitutional duty and the public’s right to information. The Court emphasized that while the executive branch is entitled to a presumption of regularity, this cannot override specific constitutional mandates.