We often summarize research work and solicit non-confidential articles from researchers that can be published on this website or reprinted with their permission. What we can relay about ongoing projects is restricted by confidentiality agreements (legal documents preventing us from sharing proprietary information), so until results of specific studies are published, we cannot usually reveal more than generalities about them.
Individual committee members are liaisons to specific researchers or to areas of research. This means they work with an individual researcher throughout the duration of their term in office or as long as the researcher is active. If the researcher prefers speaking directly to individuals, the liaison then refers that person directly to the researcher, but this is not often the case. Most don't have time or inclination to answer the same question repeatedly from different people, so these liaisons act as intermediaries between ACA members with questions regarding the project and the researchers.