South Carolina Tuesday news roundup

COLUMBIA, South Carolina (CNN) - Here's a quick look at what's making political news in South Carolina this morning:

South Carolina GOP chairman Katon Dawson attacked Hillary Clinton's new radio ad, saying that Clinton will be invisible to South Carolina voters come primary day.

The watchdog group Common Cause wants disgraced former Treasurer Thomas Ravenel to reimburse the state for the special election that was held to replace him.

Is Columbia going green? Sen. Lindsey Graham was the keynote speaker at an event Monday dedicated to making businesses environmentally friendly.

Sen. Barack Obama goes Biblical with a South Carolina grassroots effort called "40 Days of Faith and Family."

 - CNN South Carolina Producer Peter Hamby