While the Arizona immigration case certainly got the bulk of the attention from the press today there were a couple of other rulings to look at.
In American Tradition Partnership, Inc. v. Bullock the court, on a 5-4 ruling, basically upheld the prior ruling in Citizens United by striking down a Montana law which placed limits on corporate contributions to political campaigns.
It is worth noting that the law focused only on corporations, it did not place any limits on contributions from labor organizations or private donors, just from corporations.
Needless to say the reaction is pretty much the same as it was for Citizens United. I am reluctant to accept the concept of a corporation as having free speech rights myself.
The excellent site Scotusblog.com has a good summary and review of the decision.
In the case of Miller v. Alabama the court struck down mandatory life sentences for juvenile defendants.
In the underlying case they had two defendants, one had beaten a neighbor and set their house on fire, leaving them to die. In the other the defendant had been involved in a robbery in which another criminal shot and killed a clerk.
The court did not dismiss the idea that an underage defendant could get an adult sentence but they could not be sentenced to mandatory life sentence
SB has a good summary here.
Scotusblog also has a very good review of the Arizona immigration case.