Here is what I wish for immigrants:

[ProudLib72]

5. It lost a million plus inhabitants. There must be abandoned houses

Detroit, the most populous city in Michigan and the Metro Detroit area, serves as a vital port connecting the Great Lakes to the Saint Lawrence Seaway. Detroit is also known as the traditional automotive center of the world, and its name is synonymous for the US auto industry, as well as its musical legacies, which have earned it the nicknames Motor City and Motown. As of 2016, Detroit's estimated population is just over 677,000, a steep decline from a peak of over 1.8 million in the 1950s.

Detroit's population in 2000 was 951,270, which dropped to only 713,777 by 2010. In 2016, the city's estimated population was 677,116.
http://worldpopulationreview.com/us-cities/detroit-population/

The infrastructure already exists. It wouldn't be like plopping them down in a ghost town without water or electricity.