Which of the following did NOT serve as a function of the Old Supreme Courtroom?

The Old Supreme Courtroom primarily functioned as a venue for the Supreme Court's sessions, where landmark cases were heard and adjudicated. It served as the courtroom for justices to render decisions on important legal matters, embodying the judicial branch's role in the government.

Additionally, it acted as temporary Senate chambers during periods such as renovations of the Senate's regular chambers, accommodating legislative functions when necessary. This flexibility illustrates how spaces within government buildings can serve multiple purposes depending on the needs of the time.

However, while Congress has various meeting locations, the Old Supreme Courtroom was not used specifically for Congress meetings. Instead, Congress convened in designated chambers meant for legislative discussions, such as the House of Representatives or the Senate. This distinction clarifies why the first option is not a function of the Old Supreme Courtroom, as that space was reserved primarily for the judicial activities of the Supreme Court and does not pertain to legislative functions.