One week until Iowa caucuses, Haley and DeSantis still trying to chip at Trump's lead
Donald Trump isn't back in Iowa until Wednesday, so his top opponents in the 2024 Republican presidential primary, Ron DeSantis and Nikki Haley, are trying to peel away at his commanding lead with just a week remaining until the state's caucuses. CBS News senior White House and political correspondent Ed O'Keefe has more.