"We are the victims of our own success: We have created a very efficient check-deposit system, " said Elliott McEntee, president and CEO of the National Automated Clearing House Association in Herndon, Va.

CNN: House panel explores electronic billing

The deal would give LSE its own clearing house at a time when regulators are pushing for greater use of the facilities to protect the financial system.

BBC: LSE cleared by OFT to buy LCH Clearnet