The term 'SENATE PROS' is a job description for a group of people in the United States SENATE. The job title is derived from the Latin word 'PROCURATOR, ' which means 'one who takes care of business.' The job of a SENATE PRO is to act as a liaison between the SENATE and the executive branch, as well as to provide advice and assistance to senators on legislative matters. The term 'YEAS' is an acronym for 'Yielding Every Assistance to Senators, ' which is the motto of the SENATE PROS. This group of individuals is responsible for helping senators understand the complexities of the legislative process and providing them with the necessary resources to make informed decisions.