"In recent years the role of churches as sanctuaries and asylums for people fleeing law enforcement has entered the spotlight. People facing deportation for immigration law violations have sometimes turned to churches in hopes that a church’s sanctuary status will protect them from immigration enforcement. Churches that provide sanctuary to fugitives should take a moment to understand the limits upon a church’s ability to prevent law enforcement from arresting someone on church grounds, as well as the potential legal liability to the church, its employees, and its volunteers.
A church is not a valid sanctuary against arrest"
www.churchlawcenter.com
I was once seeking a particularly odious character who was hiding in a house of worship.
I was refused entry by the Imam. I was prepared to proceed, but people way above my pay grade demurred.