It doesn’t violate any law or constitutional provision for a state trial court judge to issue a search warrant and then preside over the trial of the case. McKinley v. State, 2018 Tenn. Crim. App. LEXIS 91 (Feb. 9, 2018).
The City of San Francisco has a searchable database of landlord-tenant buyout agreements, and the database has redacted information about tenants but not landlords. The landlords have no protectable privacy interest in the information under the California Constitution [the Fourth Amendment not being an issue]. San Francisco Apt. Ass’n v. City & County of San Francisco, 2018 U.S. App. LEXIS 3051 (9th Cir. Feb. 8, 2018).*