border but 3600 remain under the del rio international bridge right now. as the biden administration struggles to try to get a handle on the situation thousands of migrants are currently left in something of a limbo situation. let's bring in cnn's matt rivers live from the border. at one point law enforcement in mexico formed a human chain trying to stop migrants from making the trip across the river. what are you seeing now? >> yes. basically they succeeded in doing that, jake. what we've seen over the past couple days here are people from that encampment on the u.s. side coming across pretty freely from the u.s. to mexico to get supplies. easier to get that in mexico. less people. less chaotic. food, water easier to get. bathrooms easier. we've seen people come here for diapers. that stopped this afternoon. that group of migrants on the other side are some of the last people that were actually able to make it across into the u.s. and will eventually make their way to the encampment where