What is a wine cave? Behind one of the most memorable phrases from the debate

In one of the most tense exchanges of the debate, Senator Elizabeth Warren said to South Bend Mayor Pete Buttigieg that “billionaires in wine caves should not pick the next president.” Buttigieg responded that Warren’s net worth is “100 times” his and “this is the problem with issuing purity tests you cannot yourself pass.” Elaine Quijano anchors coverage with CBS News political analyst and Democratic strategist Antjuan Seawright, CBS News political analyst and Republican strategist Leslie Sanchez and CBSN political contributor Molly Hooper. Source