Is media playing fair in campaign coverage?

**FILE*** This July 16, 2008 file photo shows Democratic presidential candidate, Sen. Barack Obama, D-Ill., as he speaks at a roundtable discussion on nuclear non-proliferation held at Purdue University in West Lafayette, Ind. Television news' royalty will fly in to meet Obama during this week's overseas trip: CBS chief anchor Katie Couric in Jordan on Tuesday, ABC's Charles Gibson in Israel on Wednesday and NBC's Brian Williams in Germany on Thursday. (AP Photo/Jae C. Hong, file)