In 1639 Puritan settlers in Massachusetts authorized the expulsion of “pauper aliens” in what is thought to be the first case of deportation in the country. Soon after, Virginia and Pennsylvania passed laws heavily restricting “the importation of paupers,” which included criminals and “foreigners and Irish servants.”

In June 2021 the city of San Antonio inaugurated its North American Friendship Garden, a rest stop for migrating monarch butterflies featuring native wildflowers, shrubs, and trees. The garden’s aim is “the friendship and goodwill of three countries working toward common goals,” one city official said. “As a migratory insect, the monarch is a representation of migration.”