[G.R. No. 112497. August 4, 1994.]The principal issue in this case is the constitutionality of Section 187 of the Local Government Code reading as follows:

Procedure For Approval And Effectivity Of Tax Ordinances And Revenue Measures; Mandatory Public Hearings. — The procedure for approval of local tax ordinances and revenue measures shall be in accordance with the provisions of this Code: Provided, That public hearings shall be conducted for the purpose prior to the enactment thereof; Provided, further, That any question on the constitutionality or legality of tax ordinances or revenue measures may be raised on appeal within thirty (30) days from the effectivity thereof to the Secretary of Justice who shall render a decision within sixty (60) days from the date of receipt of the appeal: Provided, however, That such appeal shall not have the effect of suspending the effectivity of the ordinance and the accrual and payment of the tax, fee, or charge levied therein: Provided, finally, That within thirty (30) days after receipt of the decision or the lapse of the sixty-day period without the Secretary of Justice acting upon the appeal, the aggrieved party may file appropriate proceedings with a court of competent jurisdiction.

Pursuant thereto, the Secretary of Justice had, on appeal to him of four oil companies and a taxpayer, declared Ordinance No. 7794, otherwise known as the Manila Revenue Code, null and void for non-compliance with the prescribed procedure in the enactment of tax ordinances and for containing certain provisions contrary to law and public policy.

In a petition for certiorari filed by the City of Manila, the Regional Trial Court of Manila (A)revoked the Secretary's resolution and sustained the ordinance, holding inter alia that the procedural requirements had been observed. More importantly, (B) it declared Section 187 of the Local Government Code as unconstitutional because of its vesture in the Secretary of Justice of the power of control over local governments in violation of the policy of local autonomy mandated in the Constitution and of the specific provision therein conferring on the President of the Philippines only the power of supervision over local governments.

QUESTION: Is the decision of the RTC of Manila valid? Explain.