First is the inherent power of Congress to require testimony on matters within its legislative oversight jurisdiction.
The Administrator, or any of his duly authorized agents, shall have the power to require by subpena the attendance and testimony of witnesses, and the production of all information, documents, reports, answers, records, accounts, papers, and other data and documentary evidence which the Administrator is authorized to obtain pursuant to this section.
Most drug prosecutions do not require testimony from analysts.
To prove his guilt under Koranic law would require testimonies of four witnesses to the fornication itself.
And of course such power embraces the authority to require the giving of testimony by the officers, agents, and other employees of the corporation for like and analogous purposes.
The report noted that the panel did not have the power to compel testimony or demand documents, but instead had to rely on information provided by Israel and Turkey.
Only an Independent Counsel has the power to compel testimony -- any testimony they see fit to ask.
Both have something Mr. Cuomo did not, subpoena power to compel testimony from the governor's staff.
An inquiry that is judge-led and statutory from the start, with powers to compel the production of documents, to require the attendance of witnesses and to take testimony under oath, is an absolute minimum if it is to gain the confidence of survivors.
The CCC has powers to compel testimony and charge witnesses with giving false answers.
The SEC seems to have little trouble winning insider-trading cases on its own using its legal powers to compel testimony and subpoena documents.
