Almost eight months after Katie Abraham’s death, the Department of Homeland Security announced it was launching its latest immigration enforcement action in Illinois, “Operation Midway Blitz,” in her honor.

As the Sun-Times and WBEZ report on this moment in the Chicago area, we’ve assembled a series of explainers to help you make sense of what’s happening. This collection will be updated as new reporting is published.

"Operation Midway Blitz" begins in Chicago amid Supreme Court ruling on ICE operations and opposition from Illinois Democratic leaders to a federal law enforcement surge.

Border Patrol official Gregory Bovino, who led controversial immigration enforcement raids in southern California this summer, has arrived in Chicago.

Deploying National Guard troops to Chicago could cost taxpayers nearly $1.6 million per day, according to a nonpartisan federal budget research organization. The estimate is based on 3,000 troops potentially being sent to Chicago, though no official number has been made public.

The Chicago area is bracing for additional immigration enforcement over the weekend. Meanwhile, Illinois Gov. JB Pritzker and Chicago Mayor Brandon Johnson pushed back against President Donald Trump Saturday after the president increased his threats to send in federal troops to the city with a social media meme.

Studies have found that migrants who enter the United States either legally or without authorization do not commit other crimes at a higher rate than U.S. citizens.

These announcements by DHS are just the latest escalation of federal action in U.S. cities including Los Angeles and Washington, D.C. — all led by Democrats.

As Chicago braces for federal immigration enforcement, Mexican Independence Day celebrations in Chicago have drawn smaller crowds amid fear in Mexican American community.

The Department of Homeland Security is trumpeting the start of a new immigration operation in Chicago that's stirring up fresh confusion and anxiety.

More anti-blitz rallies have been scheduled in the Chicago suburbs in the coming days, as towns that were once Republican strongholds now lean more Democratic.