To be sure, judges are more than their demographic identities. However, a great deal of scholarship shows that background characteristics, including demographics, affect judicial decision-making, especially in small-group settings.
Trump’s homogenous nominee cohort could weaken the judicial system’s legitimacy in the public’s eye. If the judiciary does not reflect the people it serves, underrepresented groups are likely to be less trusting of those institutions, research shows. Furthermore, homogeneity in particular careers tends to be self-reinforcing. If you never see a judge that looks like you, then research shows you subconsciously determine that this institution and career path are not open to you.