What are the current challenges and criticisms regarding border security at the US-Mexico border under the Biden administration?

Despite extensive security measures including miles of razor wire and deployment of thousands of federal, state, and local authorities, the US-Mexico border continues to face significant challenges with thousands of migrants crossing daily at key locations. Law enforcement officials and border security experts highlight the overwhelming nature of the current situation, indicating that traditional security infrastructure alone is insufficient to manage the volume of border crossings. Critics argue that the Biden administration's border policies have contributed to creating what they describe as a "mess" at the border. Political commentators suggest that the administration's approach, influenced by certain political factions, has resulted in ineffective border management strategies that have left border agents frustrated and communities affected by the ongoing immigration challenges.