A powerful congressional committee is urging major telecommunications companies to do more to protect Americans against scams, part of a widening investigation into the role that U.S. companies play in the surge in cyberscams that cost Americans an estimated $200 billion in 2024.

A congressional committee is pressing AT&T, Verizon and T-Mobile to strengthen protections against scams.

A powerful congressional committee is urging major telecommunications companies to do more to protect Americans against scams, part of a widening investigation into the role that…