In accordance with Article 6 of Regulation (EC) No 396/2005, the evaluating Member State (EMS) Greece received an application from Dow AgroSciences to set an import tolerance for the active substance 2,4-D in genetically modified (GM) maize imported from Canada and the USA. The modification confers tolerance to the herbicide 2,4-D. Greece drafted an evaluation report in accordance with Article 8 of Regulation (EC) No 396/2005 which was submitted to the European Commission and forwarded to EFSA. According to EFSA, the data submitted are sufficient to conclude that a change of the existing maximum residue level (MRL) set at the limit of quantification (LOQ) of 0.05 mg/kg in maize is not required. Analytical enforcement methods are available to control the residues of 2,4-D in cereals and no risk for consumers was identified for the notified use on GM maize expressing the aryloxyalkanoate dioxygenase 1 (AAD-1) protein imported from Canada and the USA.