Residents of the Rio Grande Valley are on high alert after a July 14 incident in which Immigration and Customs Enforcement (ICE) agents chased a crew of roofers through residential streets in Laguna Vista, nearly colliding with a mother and her young son. The encounter—one of several recent ICE operations in the area—has sparked renewed scrutiny of federal arrest tactics under the Trump administration's directive to increase daily arrests to 2,000 nationwide. Samantha Weber Alarcón was driving to a movie theater in Brownsville with her son that afternoon when she saw a black SUV blow through a stop sign on Fernandez Street, followed by a red Jeep. At first she thought it was a local police chase. Seconds later, a dark-colored Ford Escape sped past her on the left, hit a speed bump hard, and stopped in a driveway. The black SUV and a white SUV then drove side by side on Mesquite Drive, squeezing her car to the right. "They speeded right next to me," Weber Alarcón recalled. "If I hadn't pulled over, they would have hit me." She ended up in a ditch and called 911. When she got out of her truck, she saw men in green vests marked "ICE" step out of the SUVs. One agent pointed a gun at the back window of the Ford, where a young man sat with his hands up, holding a paper bag with his lunch. Weber Alarcón began screaming that the agents had nearly killed her and her son. She pulled out her phone to take photos. The agent lowered his weapon, pulled the man out, and handcuffed him. A Laguna Vista police sergeant arrived but told her he could do nothing beyond reporting the ICE agents' supervisors. The handcuffed man, a U.S. citizen in his mid-twenties, was released after agents realized their mistake. ICE claimed in a statement to the Observer that officers observed a vehicle driving erratically, that the driver sped off, and that there was "no vehicle pursuit or arrest attempt." Agents said they found an "abandoned vehicle" with the man inside, who they alleged ignored orders and reached for a tool bag containing a knife. The man said the "knife" was actually a shingle cutter. Weber Alarcón dismissed ICE's account: "The car was not abandoned. They did a high-speed chase." Since the incident, residents have shared dozens of Facebook posts documenting ICE agents surrounding trucks with construction or lawn equipment in the Laguna Madre area. Weber Alarcón's original post has been shared thousands of times. Fear is especially high because of a July 14 New York Times report that ICE was ordered to pause most traffic stops after agents killed two people in Houston and Maine—a pause that lasted about a day. Legal experts say the Laguna Vista case raises questions about whether agents met the legal threshold for a stop. ICE can only stop and question someone based on "reasonable suspicion" that the person is in the country illegally. For warrantless arrests, agents must have reason to believe the person might flee before a warrant can be obtained. The agency's own policy prohibits using race, ethnicity, or type of work as sole reasons to detain someone—though those factors may be considered. A Los Angeles federal court temporarily blocked such considerations in 2024, but the Supreme Court stayed that ruling in an ongoing case. "The agents' behavior suggests they were acting on assumptions about the workers' immigration status rather than on specific, articulable facts," said attorney Clara Reyes of the Texas Civil Rights Project, who reviewed the incident details. "Driving dangerously and chasing a vehicle that has not clearly violated any law is not what the public expects from federal law enforcement." ICE did not respond to follow-up questions about the chase or whether any disciplinary action was taken. The agency's spokesperson declined to clarify how agents determined the Ford was driving "erratically" before the alleged pursuit began. For now, residents like Weber Alarcón are calling for greater accountability. "They could have killed us," she said. "And then they just drove off like nothing happened." Community members are considering filing a complaint with ICE's Office of Professional Responsibility. The episode adds to a growing list of encounters that critics say reflect a pattern of intimidation rather than targeted enforcement. As the Trump administration pushes for more arrests, the Rio Grande Valley—a region where many families are mixed-status—remains a flashpoint. The July 14 chase, caught on camera and witnessed by a civilian, may become a symbol of the tension between federal enforcement priorities and local safety.