Update - POPLINE database
I'm happy to say that full access has been restored to the POPLINE database. Once the Dean of the Johns Hopkins Bloomberg School of Public Health found out about the restriction, he reversed the decision immediately. The database is now fully functioning. Today, he released a more detailed accounting of how and why the decision to restrict keyword searching was originally made.
I'm very happy that this matter was resolved so quickly, but I feel very bad for the database administrator who made the original call as I imagine that person had a very, very bad weekend. It's just such a shame that we live in an environment in which someone felt like they had to make this change in the first place.