 On 4 March 2016, Switzerland and the EU signed a treaty that extends the agreement on the free movement of people to Croatia, which led to Switzerland's full readmission into Horizon 2020, a European funding framework for research and development.The treaty was ratified by the National Council on 26 April on the condition that a solution be found to an impasse on implementing the 2014 referendum.The treaty was passed in December 2016.