# Directives
1 - National - CSP 01-01-013 [STP 2.18] - Inspections and Investigations: Obtaining Warrants on an Ex Parte Basis and Prior to Attempting Entry
# Federal Register
1 - 45:65916 - Ex Parte Warrants - PDF
2 - 45:33652 - Ex Parte Warrants
# Regulations
1 - 1903.4 - Objection to inspection.