but were not able to get through the final barrier. that's when border agents used tear gas canisters and pepper bullets or pepper balls to keep them back, saying they were able to hold them back. 42 arrested. mexico now saying if others engage in this sort of behavior and try to cross illegally that they will be deported as well. back to you guys. >> miguel marquez, thank you very much. let's go to the other side of the border. nick watt has been in san diego. enormous deployment of resources there. a lot of attention focused. this morning, the morning after, in effect. do border control agents have control? >> reporter: yes. i mean, listen, they said they were going to keep this border closed until the situation had calmed down and until they had regained control. that was about four hours that the pedestrian crossings were closed, maybe five or six for the vehicle lanes. what they say happened was these