texas, and has more details on the worsening crisis there. bill. >> reporter: jon, good evening to you. that's exactly right. look, we already have historically high numbers of migrants at the southern border, now we're finding out there is a brand new high grant caravan heading here to the united states, and it looks like they are not going to let anything slow them down. take a look at this wild piece of video out of tap call la, mexico, earlier today showing that caravan literally forcing their way through a skirmish line set up by mexican security forces meant to stop or slow them down. as you can see, they just got a running head start, they used physical force, and they just rushed their way through that line, they broke it, and they took off running down the street in an effort to continue their path towards the united states. again, this is a massive, brand new caravan heading our way as we speak. take a look at this second piece of video. this is when the caravan first started marching earlier this morning, tapachula, mexico, kind of near the guatemalan border.