and this is something that the taliban will want to exploit. so expect president biden to offer a sense of unity, support to afghans who fought alongside the united states, but what he isn't expected do is to say that the united states is about to slow down or stop the drawdown of forces before september 11th, that the afghan government really is under pressure now to negotiate with the taliban a political solution. >> nic robertson, thanks so much. u.s. vice president kamala harris is hours away from heading to el paso, texas and tour facilities along the border with mexico. she is tasked with trying to stem the throw of migration from central america and has faced blowback for not touring the border area before thounow. kaitlan collins has more. railroad the first time you will see kamala harris on the border