Issues of race have historically been and remain fundamental features in American society and politics. Yet, for all the significance and the attention, these issues receive in public discourse and debates and in scholarly political science inquiry, especially in race/ethnicity and politics (REP) research, an array of questions are understudied. One such set of questions pertains to the activities, capacity, and effectiveness—more specifically, the “success” or “influence”—of racial/ethnic minority advocacy (or “interest”) groups, as they endeavor to influence policy making in the major legislative body in US governance, Congress.

Michael Minta’s excellent book, No Longer Outsiders: Black and Latino Interest Group Advocacy on Capitol Hill, is a notable contribution to the REP literature; it also goes well beyond speaking to that literature, importantly informing the (more general) American politics literature in several ways. It methodically brings together analyses of advocacy/interest groups and political parties—that is, mediating institutions—that seek to influence formal institutions (here, Congress); furthermore, it describes how representatives in Congress act individually and through the Congressional Black Caucus (CBC) and the Congressional Hispanic Caucus (CHC).

The racial/ethnic composition of Congress has become substantially more diverse over time. But has the legislative success of the interest groups that advocate for the policy concerns of Blacks and Latinx become more effective? At the broadest level, the book approaches this question in two interrelated ways: it assesses how adequately or comprehensively interest group activities actually reflect the concerns of all those in whose name they advocate, and in turn, it describes and details how and what the interest groups do, and the means through which they address issues in their efforts to influence congressional decision making. In Minta’s analysis, he is careful to note distinct constraints that minority interest groups face (see chap. 3); further, he helps us understand how the intricacies of congressional structures and processes (also) shape what and how minority interest groups and minority members of Congress act or do not act.

As a preface to the primary empirical examination in the book, Minta presents an historical overview of the origins and development of major minority advocacy interest groups (chap. 2). Those groups include the NAACP, National Urban League, Leadership Conference on Civil Rights, UnidosUS (until 2017, National Council of La Raza), League of United Latin American citizens, and Mexican American Legal Defense and Education Fund. For those unfamiliar with them, the summaries provide ample information to situate these groups in a general context and in the pluralist interpretations of American politics that Minta references (see pp. 21–22, 148).

Political behavior or political psychology studies have comprised a vast portion of the REP research. These address important and worthy concerns and have illuminated our understanding immensely. Minta does not ignore this research, but it plays only a small part in his book. He refers to survey evidence on what are deemed the “most important issues” identified by Blacks and by Hispanics in the mass public and compares those findings to the time and attention that advocacy groups give to addressing those concerns. He contends that advocacy groups by and large do focus on issues, questions, and policies of major concern to their respective constituencies. Minta repeats and stresses this claim a number of times, mainly to consider and challenge criticisms by various scholars that minority advocacy groups and minority members of Congress ignore, neglect, or otherwise insufficiently emphasize the concerns of those most disadvantaged within the groups. (Minta acknowledges, however, that there is some modest divergence between public views and the actions of the groups and politicians.)

To explain what, how much, how, and how effectively and why minority advocacy groups do what they do or do not do, Minta proceeds in a novel way. Others have examined specific policy areas or a limited set of advocacy groups and their activities, whereas Minta offers a more comprehensive assessment in examining a number of groups’ efforts targeted at Congress. How do we get a clearer sense of or measure influence (or at least efforts at influence) or “legislative success” on this score? Two key indicators are (1) whether a bill supported by any (particular) advocacy group is “marked up” in the committee processes and (2) whether someone representing a minority group participates, through providing testimony in hearings, on advocacy-supported relevant bills. These data are drawn primarily from the 110^th (2007–8) and the 111^th (2009–10) Congresses. Minta meticulously probes the evidence and concludes that there is (at least) a discernible modicum of impact, manifested in policy areas significant for the minority groups’ mass publics.

At the same time, we learn more about which congressional committees are most relevant to Black and Latinx advocacy groups and to members of Congress; they are not necessarily one and the same for the two minority groups. Minta also provides evidence of the presence of minorities on particular committees, as members or committee chairs; that is, he explores “incorporation” of minority members in Congress, beyond just their numbers. In the process of considering various aspects of advocacy and of policymaking, the book depicts the complicated inner workings of Congress and the implications thereof that (mostly) impede assertion of minority groups’ issue concerns. We can thus better appreciate how interest groups interact with, and minority members work within, an institution organized around committees, rules, procedures, norms, and the like. Moreover, minority members must navigate a party system based on their status within a party (most commonly Democrats) and in which interparty relations—in terms of which party is in the majority—matter a great deal.

Minta’s inquiries into Black and Latinx politics go well beyond mass behavior, and his study of Congress go well beyond roll-call vote analyses. As such, his broader approach advances the study of Congress and simultaneously enriches two bodies of scholarship: REP and institutions (Congress).

What reservations might one express about this compelling book? Some parts of the book could be more integrated and connected to each other in terms of the time periods examined. The evidence presented is often from different periods, and how they align with each other is not always clear; some of the data cover large swaths of time, whereas other data do not. Additionally, though it is surely a major task, more recent data on committees’ bill mark-ups and participation in hearings in years after 2010 would be informative, especially given the major developments in American political history over the last decade. Assessing whether (and if so how, why, and the extent to which) the earlier findings continue or change would be an interesting story about racial/ethnic group influence within American political development, as translated through a major government institution. In addition, more attention to relations between minority groups regarding coordination or cooperation, conflicts, or independent action would be welcome. Considering further the relations of minority groups with other (non-minority) groups would also be revealing, particularly given the pluralist interpretation and guideposts that Minta identifies and examines.

In closing, Minta suggests, albeit mostly implicitly, a number of future research issues worthy of attention. Here, along with updating the evidence, it would be valuable to delve more deeply into some (sub)set of bills, including, perhaps, case studies. In any case, this book deepens knowledge within each of what are (too) often two separate fields of study in American politics research. As such, it also links and bridges them, encouraging a more complete, fulsome understanding of both.