we're not just fighting cancer anymore. we're outsmarting it. the evolution of cancer care is here. >> martha: breaking tonight, moments ago, president trump weighing in on the big controlled the gun control debate on capitol hill. the president saying he would be looking into the proposed ban of what is called a bump stock. the nra and congress both say that they are open to discussing the ban of this gun attachment that allowed paddock to fire hundreds of bullets in minutes. how speaker paul ryan weighed in earlier today. >> i didn't even know what they were until this week, and i am an avid sportsman. so i think we are quickly coming up to speed with what this is. fully automatic weapons have been banned for a long time.