Former president George W. Bush will join his brother former Florida Gov. Jeb Bush in South Carolina to campaign. The two will focus on national security issues in the important Southern state. "They want a commander-in-chief that will have a steady hand and have a backbone and will support the troops and has detailed plans on how to keep us safe as it relates to Islamic terrorism," Jeb Bush said Wednesday on CNN's "New Day." "Here in South Carolina particularly that's an important issue."