Looks like The Houston Chronicle doesn't like the way ICE took it to the employees up in Postville, Iowa. Apparently they think non-Americans have due process rights.
Here's how the venerable Des Moines Register's covered the story as it was happening.
One way to deal with an issue such as this in the classroom is to explore its many facets with a New York Times Learning lesson plan. Check out their Learning Network for archives, crossword puzzles, and Current Events quizzes for a supplement to Social Studies learning.
For a more irreverent view on Mexican-American issues, I cautiously suggest reading Gustavo's Arellano's Ask a Mexican Column. Bring your sense of humor and prepared to be edified.