If you are looking for the decisions and opinions issued by the United States Supreme Court this week, the decisions can be found at http://www.supremecourt.gov/  on the right hand side of the screen under "Recent Decisions"
Here are the direct links to some of the more prominent decisions:
United States v. Windsor (DOMA decision): http://www.supremecourt.gov/opinions/12pdf/12-307_g2bh.pdf 
Hollingsworth v. Perry (Prop. 8): http://www.supremecourt.gov/opinions/12pdf/12-144_8ok0.pdf 
Shelby County v. Holder (Voting Rights Act of 1965): http://www.supremecourt.gov/opinions/12pdf/12-96_6k47.pdf