544.085. 1. For any warrant that is issued by a UnitedStates court that is to be served within the boundaries of the
state of Missouri, the federal agent or employee responsible for
serving the warrant shall, prior to such service, notify the
sheriff of the county where the warrant is to be served.
2. When a federal agent or employee has belief that a
sheriff or a member of the sheriff's staff has breached
confidentiality regarding the issuance of warrants within the
county, then the federal agent or employee may file a petition
supported by probable cause with an associate circuit judge
within the respective county requesting a waiver of the
requirement to provide notice to the sheriff.
3. Subsection 1 of this section shall not apply when the
warrant is issued in the interest of national security or
defense.