ການຫຼີກລ່ຽງ ຄວາມຜິດພາດ ແມ່ນເປົ້າໝາຍຫຼັກ ໃນການໂຕ້ວາທີ ລະຫວ່າງ ປ. ທຣຳ ແລະທ່ານໂຈ ໄບເດັນ

Avoiding any major mistakes is a principal goal for President Donald Trump and former Vice President Joe Biden in their first debate Tuesday, September 29. VOA’s Steve Redisch looks at some of those historic debate moments that shaped U.S. politics.