Republicans and Biden spar over the border
The first major interruption of the night came as Biden discussed the border, specifically a bipartisan proposal to enact immigration changes that was tanked by congressional Republicans under pressure from Trump.
"In November, my team began serious negotiations with a bipartisan group of senators. The result was a bipartisan bill with the toughest set of border security reforms we have ever seen," he said.
Republicans in the crowd began to boo.
"Oh, you don't think so? Oh, you don't like that bill, huh? That conservatives got together and said was a good bill? I'll be darned, that's amazing," Biden said sarcastically.
As he began to lay out what the bill would do and its endorsement by the Border Patrol union, he was met with more opposition.
"I know you know how to read," he said.