"FILE - In this Oct. 18, 2011, file photo U.S. Supreme Court justice Antonin Scalia smiles during a college address in Chicago. Scalia said late Wednesday July 18, 2012, that he hasn't had a ""falling out"" with Chief Justice John Roberts over the Supreme Court's landmark 5-4 decision validating much of President Barack Obama's health care overhaul.""There are clashes on legal questions but not personally,"" Scalia said of the court. (AP Photo/Charles Rex Arbogast, File)"