[msherry]

That was really interesting, thanks. In particular,

"The Enforcement Process. Congressional investigations often begin informally, with the interested committee or subcommittee first seeking information on a voluntary basis (i.e., by sending a letter request or asking for an informal interview), rather than by issuing compulsory subpoenas. Although there is no legal obligation that a party comply with such a request, it is typically in the responding party’s best interest to do so"