text:  In one hour, President Biden and former President Trump take part in their first debate of 2024. CBS's Nancy Cordes says both launched new attack ads earlier today. Biden knocking Trump on abortion. Two years ago, Trump overturned Roe v. Wade. Because of the abortion bans across the country, women's lives are at risk. Trump knocking Biden on age. Do you think the guy who was defeated by the stairs makes it four more years in the White House?