they are trying to expand in both of these key ports and the port leadership says that is an important first step. >> any particular reason that ports and long beach don't operate 24 hours a day? >> reporter: it is a very complicated thing. it worked well for some time. here is the problem. these are massive ports. ports processing 25% of u.s. imports. more than 40% of the imports coming from asia. you don't just flip a switch and have the ports running 24/7. you mentioned the truck drivers. that's part of it. you have to get drivers in here and get the companies on board. you have to get all of these players, the customers that use the ports also working 24/7. what they're saying is, yes, this is an important start, but they're not going to clear the