Republican House members accused President Biden Wednesday of not doing enough to prevent drug and human smuggling across the US-Mexico border as the wave of migration continues to grow.

A dozen lawmakers traveled to the border city of McAllen, Texas to visit a migrant processing center and a portion of the border wall. They also spoke to Border Patrol and Army National Guard members who have attempted to combat the ever-rising tide of illegal immigration.

McAllen is located in the Rio Grande Valley, which has seen the most migrant encounters of any area along the southern border.