In early 2021, Mayor Lori Lightfoot of Chicago signed an updated ordinance welcoming illegal immigrants.
In Sept 2022, when a busload of illegal immigrants was sent to Chicago, the Mayor sent them to a suburb without letting the suburb know about it.
Interesting.
However, the 2021 action by Chicago did not actually promise to keep illegals, it only restricted Chicago law enforcement from coordinating their information with the Federal Government border related agencies. The two actions (barring local coordination) and sending illegal immigrants to another jurisdiction are different enough that I can't call this hypocrisy.
The 2021 ordinance may however have been illegal but that is not a hypocrisy issue.
2021 Article on the Welcoming is
https://www.cbsnews.com/chicago/news/mayor-lori-lightfoot-welcoming-city-ordinance-chicago-police-cpd-ice-immigration-customs-enforcement/
2022 Article on Chicago Sending New Immigrants to suburb (Burr Ridge) without discussing it with the suburb is
https://news.yahoo.com/chicago-welcomes-texas-migrants-then-195800361.html