NEW: 2020 presidential candidate Sen. @BernieSanders (I-VT) tells @NorahODonnell that the Senate impeachment trial, necessitating his presence in Washington, D.C., places him "at a disadvantage" ahead of the Iowa caucuses on Feb. 3; watch more tonight at 6:30 p.m. ET. pic.twitter.com/l8WErwfHpV

— CBS Evening News (@CBSEveningNews) January 24, 2020