(3)The limitation in time of the application of Implementing Decision 2013/280/EU was due to the lack of mutual reliance on each other's oversight systems. Therefore, in particular, the mechanism of cooperation between the competent authorities of the Member States and the competent authorities of the United States has been reviewed in order to assess the progress made towards reaching mutual reliance. Since the adoption of Implementing Decision 2013/280/EU, certain forms of reliance have been established, including a commitment to avoid unnecessary duplication of work and to define approaches to cooperation leading to a higher degree of reliance in the future.