Houston and Dallas have not declared themselves to be "sanctuary cities" for immigrants who are in the United States illegally, but in the eyes of some, they might as well.

According to a new report from the Pew Research Center, the two metropolitan areas together have nearly 1.1 million residents who are there illegally - 575,000 in the Houston-Woodlands-Sugar Land area and 475,000 in the Dallas-Fort Worth-Arlington area.