The U.S. Department of Justice’s biggest criminal investigations are increasingly transnational cases involving bribery or financial schemes, according to acting Assistant Attorney General Kenneth Blanco.

In a speech to the Atlantic Council Inter-American Dialogue on Wednesday, Blanco stressed the recent cooperation between DOJ and foreign prosecutors. He singled out Brazil’s collaboration on corporate bribery schemes that in the past year resulted in major cases against U.K.-based Rolls Royce PLC. and three Brazilian companies: aircraft manufacturer Embraer, construction conglomerate Odebrecht and petrochemical company Braskem.