D.C. v. Heller looks like it will be announced this week, possibly tomorrow. Tom Goldstein thinks Scalia will write the principal opinion. Mike O'Shea on what that would likely mean:

I think a Scalia-authored opinion would be great news for those who are mainly concerned with the Second Amendment as a limit on federal gun control, but somewhat ambiguous news -- at least in the short term -- for those who hope for the incorporation of the Second Amendment as a check on state and municipal governments.

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