This is the 2nd wave of 300 people or more to arrive in New Mexico in less than 24 hours.
This is an area where there is no wall. They simply just "made their way around the pedestrian fence at Sunland Park border crossing late Monday.
https://www.lcsun-news.com/story/news/local/new-mexico/2019/02/13/u-s-customs-border-protection-arrests-311-migrants-sunland-park-new-mexico/2853528002/