Conversation so far:
What does the section have to do with the hiring of sex workers?
Vitter's phone number was included in a published list of phone records of Pamela Martin and Associates.
Who was Pamela Martin and Associates?
a company owned and run by Deborah Jeane Palfrey, also known as the "D.C.
Madam".

Question: What did she do?
Self-contained rewrite: What did Pamela do?