Upon arriving in Ellis Island, however, she was detained and, despite efforts by her family, denied entry on the grounds that as a pregnant and unmarried woman she was likely to become a public charge and, thus, was an "undesirable alien."
González thus became the focus of a civil lawsuit which eventually reached the U.S. Supreme Court. The Court concluded that person's living within American territories were not "aliens" and could not be denied entry to the US on that ground. The Court further ruled, however, that the question of whether citizenship would be extended to the people of those territories was a matter for Congress. Thirteen years after González v. Williams, the United States Congress addressed the issue of citizenship as it related to Puerto Ricans. The Jones-Shafroth Act was passed in 1917 giving the island residents citizenship.