of these changes we would be incapable of granting National any of the relief requested in its original complaint and any decision we would render would clearly constitute an impermissible advisory opinion. Therefore, National’s claims are moot. While we refrain from deciding whether these changes would nullify any potential constitutional infirmities in the City’s zoning ordinance, we do hold that the amendments rendered all the complaints raised by National in this suit moot. Whatever defects may remain in the City of Miami’s zoning ordinance or other laws are not properly before us and we do not address them. As we have held, “under our constitutional system courts are not roving commissions assigned to pass judgment on the vali 412, 415, 92 S.Ct. 574, 576, 30 L.Ed.2d 567 (1972) (<HOLDING>). Coral Springs, 371 F.3d at 1329 6 . Miami
holding that tax exemption for church property does not violate establishment clause holding that denial of tax exemption for part of church property that was not necessary for occupancy and enjoyment of church did not violate first amendment holding that a commerce clausebased challenge to florida banking statutes was rendered moot by amendments to the law holding that irs examination of corporate minute books of a church to determine whether it qualified for tax exemption was not unconstitutional interference with religious affairs of the church under the first amendment holding moot a challenge to a florida tax exemption for church property when the law had been repealed