Todd M. Siebert: Jeb: Trump isn’t ready

Columbia, South Carolina (CNN)Jeb Bush is on a mission to reboot his presidential campaign and boost his struggling poll numbers.

And part of that strategy is to go after Marco Rubio.

In a lengthy sit-down with CNN’s Jamie Gangel at a local restaurant here on Tuesday, the former Florida governor had no qualms pointing out repeatedly that Rubio — a first-term senator from Florida — has neglected his job in Congress since launching his White House campaign.