Florida Gov. Ron DeSantis ended his 2024 presidential campaign on Sunday before endorsing former President Donald Trump days before New Hampshire’s first-in-the-nation primary. Meanwhile, former U.N. Ambassador Nikki Haley is intensifying her criticism of Trump as she attempts to close the gap in the Granite State. "CBS Mornings" co-host Tony Dokoupil is joined by Caitlin Huey-Burns and Robert Costa to discuss the state of the GOP race.