The last decade has witnessed a crusade by the Brazilian Right, losers of four consecutive presidential elections, to seize power through extralegal means. At the center of this was Operação Lava Jato, which used politicized corruption allegations to discredit the center-left Workers' Party and culminated in the impeachment of Dilma Rousseff, the imprisonment of former president Luiz Inácio Lula da Silva, and the election of the far-right Jair Bolsonaro. Although it has only gradually become clear, the United States played a key role through efforts to influence Brazilian prosecutors and judges via training programs and informal collaborations.Larissa Rosa Corrêa's monograph on US efforts to influence Brazilian trade unionism during the 1964–85 military dictatorship is thus remarkably timely. Anti-Communist Solidarity sheds light on the softer forms of power used by US empire. In the 2010s, US efforts to influence the Brazilian judiciary had little to do with eliminating corruption and everything to do with restoring US hegemony in an emerging oil-producing and diplomatic power. Similarly, as Corrêa conclusively demonstrates, efforts to bring collective bargaining to Brazil were less about empowering the Brazilian working class than weakening communists. These efforts were carried out by the American Federation of Labor and Congress of Industrial Organizations (AFL-CIO) and its American Institute for Free Labor Development (AIFLD), whose goals under George Meany were inextricably linked to those of US empire.Despite their history of mobilization against the military coups of the 1960s and the Central American wars of the 1980s, in recent decades US Latin Americanist scholars have de-emphasized explanations focused on empire. Thus, it is unsurprising that this vital book was written by a Brazilian, as Brazilian scholars have remained more attuned to the deleterious effects of US imperialism. This focus on US policy by a non-US historian is the book's greatest strength, not only in terms of theoretical orientation but also in terms of the sources consulted. As Alex Lichtenstein points out in his perceptive foreword, through her close examination of Portuguese sources produced by Brazilian trade unionists Corrêa complicates narratives that might assert a unidirectional flow of power from North to South. Despite AIFLD attempts to convince Brazilians of the superiority of the US model of collective bargaining, even some of the most conservative Brazilian trade unionists continued to assert the superiority of their own corporatist labor structure, particularly the labor courts.This final point emerges clearly over the course of the narrative, whose chapters unfold roughly across the administrations of four Brazilian presidents. Chapter 1 demonstrates how the AFL-CIO sought to promote a US trade union model as an antidote to the perceived communist sympathies of the labor movement during the turbulent years preceding the 1964 coup. Chapter 2 shows how US labor ideals were given their fullest expression under the pro-American government of Humberto Castelo Branco, the first military president. In chapter 3, we see how AIFLD began to clash with more nationalist currents in the Brazilian regime that questioned the assumption that a US model was directly applicable to Brazil. After a close analysis of Brazilian labor leaders' oft-critical reactions to the US labor model in chapter 4, chapter 5 shows how AFL-CIO influence in Brazil diminished in the 1970s, as the repression of the “years of lead” closed off opportunities for even capitalism-friendly, US-style labor mobilization.Despite the title, which indicates that Corrêa's book covers 1964–85, the narrative closes in 1974. This decision can be attributed to the fact that US influence over Brazilian unionism waned under more nationalist Brazilian governments. In addition, one set of sources vital to the book—the records of the US Department of State—had, as of the time of Corrêa's research, only been declassified until 1976. However, this means that the most obvious question—the relationship of North American “free and democratic unionism” to Brazil's “new unionism” that appeared in 1978—ultimately remains unanswered. How to explain the fact that Lula and a new generation of left-wing unionists advocated for direct collective bargaining and a weakening of corporatist labor relations—precisely the values AIFLD attempted to inculcate among Brazilian unionists? To what extent did the United States attempt to influence the new unionism led by Lula? These provocative questions will have to remain for future scholars.In addition, two issues may limit the book's impact on an Anglophone audience. First, while the original edition of the book is written in excellent academic Portuguese, the excessively literal translation results in awkward, clunky English that is not particularly readable. Second, the $97.99 price point may be prohibitive to all but the most dedicated specialists. This would be unfortunate because Anti-Communist Solidarity is a must-read not only for historians of Brazilian and Latin American labor history but also for those interested in US labor history, US–Latin American relations, and the strategies of modern-day empires to protect their interests.