The Codevelopment was, in the 1980s, an innovative concept that pointed out the function of diasporas in the development policies of their native country, and has now become an alibi for restrictive migratory policies. The creation of a systematic link between immigration and Codevelopment is, however, a deception, because the temporal logics are different and mobility is an asset for economic development. The true solutions lay in facilitating brief successive stays in Europe. It is necessary, moreover, to associate the countries of the South with the definition of Codevelopment, whereas the difficulties of the institution of this policy are tied to the mobilisation of the migrant’s saving and to its orientation towards beneficial programs for the whole population.