HAPPENING NOW: Pres. Trump delivers remarks at a breakfast with Republican Senators. https://abcnews.link/tUte2YS | ABC World News Tonight with David Muir

A dog from San Francisco was playing around an oceanside bluff when it slipped and fell onto a ledge about 40 feet below the top of the cliff. David Muir shares the incredible efforts from the rescuer who rappelled down the cliff and brought him to safety. https://abcnews.link/QOmpF8V | ABC World News Tonight with David Muir