President Biden inspected a Texas port of entry during his first trip to the southern border since taking office. Facing stiff criticism over border security, the president met with border officers and faith-based social service agencies, and he walked along a stretch of the border. Mr. Biden’s first visit to the U-S-Mexico border came as Republicans blame him for record numbers of migrants crossing into the country. Immigration will be one of the topics discussed at the North American Leaders Summit in Mexico City this week.