A Texas congressman said on Saturday that three migrants, including two children, drowned while trying to reach the US near the border city of Eagle Pass, where the Biden administration says Texas has begun denying access to Border Patrol agents. US Representative Henry Cuellar, a Texas Democrat, accused the state of failing to act amid escalating tensions between Texas and the US government over immigration enforcement. On Friday, the Justice Department told the US Supreme Court that Texas had taken control of an area known as Shelby Park and were not letting Border Patrol agents enter. The park is in Eagle Pass, which is a major crossing point for migrants entering from Mexico and is the centre of Republican Governor Greg Abbott’s aggressive attempts to stop illegal crossings, known as Operation Lone Star. Migrants are periodically killed when swept away by currents of the Rio Grande.