 Biden's sit-down interview with NBC News anchor Lester Holt will air later tonight. Biden has been under growing scrutiny from Democrats over his age. The interview airs at 9 p.m. Eastern. Wall Street's closing higher, with the Dow Jones Industrial Average hitting a new record. Stocks rose as former President Trump officially became the GOP nomination on day one of the Republican National Convention. Shares in Trump media surged more than 30 percent following the assassination attempt on the former president over the weekend.