WASHINGTON (AP) — Republicans briefly brought the Democrat-led impeachment investigation to a halt Wednesday when around two dozen GOP House members stormed into a closed-door deposition with a Defense Department official. Democrats said the move compromised national security because some of the Republicans brought electronic devices into a secure room.

The protest by Republican lawmakers captured national attention, drawing the focus away from the testimony of a top U.S. diplomat who told lawmakers just a day earlier that he was told President Donald Trump was withholding military aid from Uk...