Republicans storm secure impeachment deposition, delay testimony

US congressional Republicans furious about being left out of the Donald Trump impeachment process stormed a closed-door witness deposition Wednesday and refused to leave, escalating a showdown over the investigation of the president.It is a violation of US House rules to access SCIFs -- secure facilities designed to prevent electronic eavesdropping -- without permission, and concerns were raised that lawmakers were committing serious security breaches by striding in with their mobile phones.