Ryan and Booker Temper Attacks on Biden, Urge Democratic Unity

(Bloomberg) -- Two Democratic presidential hopefuls walked back their attacks on front runner Joe Biden as they faced questions Saturday about their previous statements on the former vice president.Representative Tim Ryan of Ohio, who this week said he’s lost faith in the front-runner’s ability to beat Donald Trump, and New Jersey Senator Cory Booker, who spent weeks criticizing Biden’s record on race, both said their goal is to win back the White House.“I have some conce