WASHINGTON (AP) — The Supreme Court threw out key provisions of Arizona's crackdown on illegal immigrants Monday but said a much-debated portion could go forward on checking the status of suspects who might appear to be in the U.S. illegally.

The court upheld the "show me your papers" requirement that police check suspects' immigration status. Even there, though, the justices said the provision could be subject to additional legal challenges, and they removed some teeth by prohibiting officers from arresting people on immigration charges.

The court announced that Thursday would be the last day of rulings this term, which means the decision on President Barack Obama's landmark health care overhaul probably will come that day.