Thank you for all of your responses. I have attached a detailed summary.

  I received responses from 18 Michigan Libraries and from a Michigan Librarian that had worked in Oregon in 3 different libraries. Of those 21 libraries, almost all of them have no barriers to accessing materials, regardless of age. One library does have a policy of restricting R-rated material from underage patrons. One restricts all movies from underage patrons. One avoids the problem by not purchasing any R-rated movies. Otherwise, every library leaves the responsibility with a child's parents.

 

 Here are some relevant links provided in the responses:

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