A conversation with Esteban Rópolo, Partner at Argentine law firm Baker & McKenzie Sociedad Civil, on key issues on merger control in Argentina. NOTE—to see whether notification thresholds in Argentina and throughout the world are met, see Where to Notify. 1. Have there been any recent developments regarding the Argentine merger control regime and are any updates/developments expected in the coming year? Are there any other 'hot' merger control issues in Argentina? The Defence of Competition Law No. 27,442 (the Law) enacted on 22 May 2018, sets up a new merger control regime in Argentina. Under the Law, a new National Competition Authority (Authority) is envisaged, as a decentralised and self-governing body within the national executive branch, will be the competent authority for competition matters. The new Authority will include by the Antitrust Court, the Secretariat of Anti-competitive Behaviours, and the Economic Concentrations Secretariat. Once their members are appointed, these authorities will replace the current functions of the National Commission for the Defence of Competition (Commission) and of the Secretary of Commerce. Therefore, when we make reference to the