How are migrants attempting to enter the United States outside of official border crossing points?

According to border security experts, individuals from around the world are crossing illegally into the United States by entering "between the ports of entry" rather than through official border crossings. This means migrants are bypassing designated immigration checkpoints and crossing at unauthorized locations along the border. This pattern of illegal border crossings occurs alongside the surge in asylum claims, creating additional challenges for border control agents. The practice involves people from various countries who choose to avoid official ports of entry, likely to circumvent standard immigration processing procedures and documentation requirements that would normally occur at legitimate border crossing points.