Cory Booker: We're set up to compete and win in Iowa

New Jersey's Cory Booker is one of five sitting Senators who could be pulled off the presidential campaign trail to take part in an impeachment trial next year. Senator Booker spoke to CBSN's Reena Ninan about the role he would play in an impeachment trial and the state of his campaign ahead of this week's qualifying deadline for the next debate.