Remittances remain a key source of funds for developing countries, far exceeding official development assistance and even foreign direct investment. Remittances have proved to be more stable than private debt and portfolio equity flows, and less volatile than official aid flows, and their annual flow can match or surpass foreign exchange reserves in many small countries. Even in large emerging markets, such as India, remittances are equivalent to at least a quarter of total foreign exchange reserves. India, China, Philippines and Mexico are the top recipients of migrant remittances. The...