I'm a little confused, but in my own experience process or summons servers tend to surprise you. However, they cannot act with impunity like bail bondsmen/bounty hunters. I believe that they have to respect certain times of day, etcetera. Every time I've been served they walk and say my name, and my acknowledgment is allowing them to serve me. Does that make sense?

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Ron Paul doesn't deliver babies.
He reads them the Bill of Rights until they crawl their way to freedom!