With Martin Luther King Jr. Day falling on the same day as the first contest in the 2024 GOP primaries, we take a look back at King’s own words on the power of voting. Source

The Biden administration has warned Texas officials it will take action if they continue to bar Border Patrol agents from a park near the U.S.-Mexico border. Texas National Guard troops have taken control of the park and erected barriers, preventing federal agents from entering. Weijia Jian reports. Source

The bitter cold and heavy snow that hit much of the U.S. on Monday is now bearing down on the Northeast. The Weather Channel meteorologist Mike Bettes has the forecast. Source

The Iowa caucuses are the first test of the 2024 race. Jeff Kaufmann, chairman of the Republican Party of Iowa, joins CBS News to unpack the contest. Source

A U.S. cargo ship sailing off the coast of Yemen was hit by a ballistic missile fired by Houthi rebels, U.S. Central Command said Monday. No injuries were reported. Charlie D’Agata has more on the rising tensions in the Red Sea as the Israel-Hamas war rages on. Source

Millions of Americans are under wind chill alerts as extreme cold weather envelops the U.S. CBS News correspondent Omar Villafranca reports. Source

Former President Donald Trump clinched his first victory of the primary season Monday night at the Iowa caucuses. Source

Former President Donald Trump’s win was due to widespread support: He won men, women, older voters and younger voters and he improved on his 2016 performance. Source

More than 100 million Americans were under wind chill alerts on Monday. Heavy snow also swept across much of the U.S. Omar Villafranca reports. Source

With former President Donald Trump projected to win the Iowa caucuses after consistently topping the polls leading up the contest, the big question for many was who would come in second place and how strong a showing would they have. Former South Carolina Gov. Nikki Haley and Florida Gov. Ron DeSantis were fairly even in the polls leading up to Iowa, with Haley pulling ahead in the final days before the caucuses. Ed O’Keefe has more. Source