Walker feeling the heat  —  He says he's ready for 2016 but the Wisconsin governor hasn't faced anything like this.  —  Scott Walker likes to say that the recall election he survived three years ago, when national media descended on Madison to cover his showdown with Big Labor, prepared him for the rigors of a presidential campaign.

Johnson warns Mall of America patrons  —  DHS Secretary: ‘You have to be vigilant’ 04:06  —  Washington (CNN)Shoppers at the Mall of America need to be “particularly careful” after a terror group singled out the Minnesota super-mall for attacks, Homeland Security Secretary Jeh Johnson says.

Mall of America Heightens Security After al-Shabaab Threat … One of the largest malls in the United States has heightened security after a video claiming to be posted online by a Somali militant group affiliated with al Qaeda called for attacks against the mall.