Coming Up on This Week with George Stephanopoulos

July 3, 2008— -- This Sunday, George talks with Sen. Jack Reed (D-R.I.), an Obama supporter, and Sen. Joe Lieberman (I-Conn.), a McCain supporter, about the '08 race for the White House. Also, Libertarian presidential candidate Bob Barr discusses his candidacy.

Then, on the "Roundtable," Ted Koppel, Johnathan Capehart, Michelle Cottle, and Mark Halperin debate the week's politics.