Chris Christie on friendship, political rivalry with Trump

Former Gov. Chris Christie, R-N.J., was one of many Republican candidates who ran for president in 2016. After pulling out of the race, Christie became a vocal supporter of President Trump, a longtime friend. Christie joins Judy Woodruff to discuss his new book, “Let Me Finish,” which Democratic adversary he thinks Trump should fear in 2020 and why he would have made a better president.