During intervals of humanity, some disposition has been manifested to permit the return of those who have never offended, who have been banished by a terror which the government itself has reprobated, & to permit in case of arrestation, an investigation of the fact of emigration as well as of the identity of the person accus'd.
I was born in New York City, but I was raised in New Jersey, part of the great Jewish emigration of 1963.
I won't start quite at the beginning... but the emigration of my parents from Nazi Germany and their new life in the U.S.A. A one sentence summary of these events is that after some years of trouble and considerable hard work, my parents established a satisfactory if not comfortable life for themselves and their two children.
Scotland's political identity was destroyed, and a huge Scottish emigration to North America followed the brutal Highland clearances. These included every layer of Scottish society, not just the remnants of the defeated clans.
A great emigration necessarily implies unhappiness of some kind or other in the country that is deserted.
Migration - whether emigration or return - at the micro level is an individual choice, and government both at the Centre and the states have role only to facilitate the decision of the individuals.
