Thousands of migrants converge under Texas bridge, posing new challenge for Biden

Thousands of migrants have converged under the bridge that connects Del Rio, Texas and Mexico's Ciudad Acuña, creating a makeshift camp with few basic services in intense heat in the latest border emergency facing U.S. President Joe Biden.

Del Rio Mayor Bruno Lozano said that as of early Thursday evening 10,503 migrants were under the Del Rio International Bridge, up from 8,200 in the morning.

Food and water has been scarce, around 20 migrants told Reuters, and temperatures have risen to around 99 Fahrenheit (37 Celsius). Reuters witnessed hundreds of migrants wading through the Rio Grande river and back into Mexico to stock up on essentials they say they are not receiving on the American side.

The migrants are mostly Haitians, with Cubans, Venezuelans and Nicaraguans also present.

The squalid conditions are reflective of the humanitarian challenge facing Biden as border arrests hover around 20-year highs. U.S. authorities arrested more than 195,000 migrants at the Mexican border in August, according to government data released on Wednesday.