Campaign 2024 got down to business in Iowa this weekend as most of the declared or potential Republican candidates visited the early nominating state. Notably absent was the GOP front-runner, former President Donald Trump, who was off the trail this weekend. CBS News political correspondent Caitlin Huey-Burns, CBS News senior White House and political correspondent Ed O’Keefe and CBS News chief election and campaign correspondent Robert Costa joined “Face the Nation” to discuss.