A classified briefing for senators on the White House's request for aid for Israel and Ukraine became "heated" with Republican members storming out of the meeting Tuesday. The briefing, led by the secretaries of Defense and State as well as the director of national intelligence and the chairman of the joint chiefs of staff, was held behind closed doors to allow all 100 senators to ask questions about the administration's funding request. But it fell apart, senators from both parties said, after Republicans began asking about the border. GOP members in both chambers have demanded serious changes to immigration policy...