Veteran newscaster John Gibson gets to the core of the most salient issues facing America today as host of FNC's hard-hitting primetime show The Big Story with John Gibson, airing Monday through Friday at 5 p.m. ET, with expert legal analysis from Judge Andrew Napolitano and in-depth reports from correspondent Heather Nauert.

Topics and Guests:

President Bush is considering a lawsuit to force regulation of 527 ads
• Rep. John Dingell, D-Mich.
Terry Holt, Bush-Cheney campaign spokesman

Is same-sex marriage a political winner or loser for the GOP?
Bill Kristol, editor of The Weekly Standard

The top Shiite cleric in Iraq makes a deal with the radical cleric Muqtada al-Sadr
Patrick Theros, former ambassador to Qatar 

President Bush warns voters that John Kerry wants to add more than $2 trillion in new federal spending programs
Roger Altman, Kerry economic adviser
Pam Olsen, Bush campaign adviser

How are military service medals actually awarded?
• Retired Marine Col. Ronald Ray

All of that... and more on The Big Story With John Gibson at 5 p.m. ET.

Note: All guests and topics subject to change