Mark Zuckerberg recently testified before Congress about Cambridge Analytica data scandal:
He testified before the House Energy and Commerce Committee for nearly five hours. It was his second and final hearing this week in the wake of the Cambridge Analytica data scandal, bringing the once press shy CEO’s total time testifying on Capitol Hill to about ten hours.
Just after the hearing, I have heard a local analyst arguing that some members of the Congress shows that they lack some fundamentals related to how social media actually works.
Indeed some argued about what this testify should include in order to be catch important issues. E.g.: is it clear who actually got the data? Willingness for regulation. GDPR in US.
Assuming a Congress person understands his/her limits related to how the social media deals with the data, can he/she appoint another person (e.g. a professional who understands much better these things) to participate on his/her behalf?
Question: Can a Congress member allow a non-member to ask questions / argue during a testimony before the Congress?
NOTE: This question deals with a technicality related to how Congress hearings work, not about the actual content of Cambridge Analytica data scandal.