Sam Johnson, the Chairman of the House Social Security Subcommittee, asked Social Security's Office of Inspector General (OIG) to determine whether there are additional activities performed by the Social Security Administration for which a user fee might be charged. OIG's study is so preliminary that it is almost worthless but it does reveal that the Social Security Administration itself has formed a "user fee workgroup."
The important things here are that Republicans in Congress have some interest in charging fees for some activities at Social Security and that Social Security is studying how it can best do this.
Let me make it clear that, so far, they are only studying fees for services such as providing replacement Social Security cards but it is only a short distance from there to charging a fee for filing a claim, processing an appeal or answering a question.