Nikki Haley and Ron DeSantis Make Final Appeals Before Iowa Caucuses

Nikki Haley and Ron DeSantis are making their final appeals to voters as they race for second place against Donald Trump before the Iowa caucuses. CBS News chief election and campaign correspondent Robert Costa has more. Less than 2 weeks until Iowa caucuses Nikki Haley and Ron DeSantis are making their final appeals to voters as they race for second place against Donald Trump before the Iowa caucuses. CBS News chief election and campaign correspondent Robert Costa has more.