The program allows undocumented spouses of U.S. citizens to apply for a green card and eventually citizenship without leaving the country, a process known as “parole in place.” The White House estimated about 500,000 people were eligible for the program. 

From the moment the first bus of migrants arrived in Chicago a year ago, much of the ongoing work of supporting migrants has been done by volunteers, mutual aid groups and community organizers who swung into action.