Yes, when they need to.
staff and aides
Congressional is the proper adjective for Congress, as in Congressional hearing.
It is called a congressional oversight hearing. During these hearings, members of Congress have the opportunity to question and gather information from cabinet members regarding the implementation and effectiveness of laws and policies.
No. Congress does not have the power to try criminal cases.
Congressional staffers are people who work for the US Congress. Some congressional staffers work for individual members of Congress.
Do you mean Congressional Black Caucus? If so then this is the block of Congress that are Black and serving in congress for a number of states.
Congressional
Congressional record
Congressional Record.
Congressional is anything that deals with or is related the US congress. Congress is composed of the US Senate and the House of Representatives.
The purpose of a public hearing is to allow citizens to voice their opinion. While the opinions are not binding, they are part of the fundamental democratic right to free speech.
congress