country as the white house tonight keenly aware that any big issues with the backlog could severely affect the holiday shopping season and potentially the president s political standing. this is a big first step in speeding up the movement of materials and goods through our supply chain. reporter: the port of los angeles, the nation s largest, will now operate around the clock, along with the nearby port of long beach. together, they handle about 40% of the country s container traffic, carrying laptops, tvs, and toys, and holiday gifts, soon to be in higher demand. the commitment is being made today are a sign of major progress in moving goods from manufacturers to a store or to your front door. reporter: c.e.o.s from top retail and delivery companies, who met with the president today, pledged to work more off-peak hours to clear the cargo. can this administration guarantee that holiday packages will arrive on time? they re not the postal service or u.p.s. or fedex. we cannot