Supremes rule on Arizona immigration law, campaign spending, life in jail for children

Today, the Supreme Court of the United States:

Killed most of Arizona's hated immigration act—but will still allow police to check immigration status while enforcing other laws. [CNN]

Struck down a Montana law that limited corporate campaign spending. Corporations are people, my friend. [CBS]

• Ruled that states cannot require children convicted of murder to serve their entire lives in jail without parole. [USA Today]