The change from an agricultural or rural economy to an urban one does not preclude subsidies as a way of lifting people out of poverty it simply means that subsidies have to be more targeted. As most cities continue to grow and attract more and more people from rural areas, the state needs to find a way to address the problem of urban migration, which is closely linked to the formation of poor communities particularly around cities. Illegal immigration also contributes tremendously to this problem, particularly in areas such as the Mexico-California border. Targeted subsidies can slow the pace of migration, by giving those in the countryside and in poorer countries a better standard of living where they already live.