FULL: VP Harris speaks at campaign rally after tapping Walz as running mate

Vice President Kamala Harris rolled out the welcome mat for her running mate Minnesota Gov. Tim Walz. The Philadelphia rally is the first public outing for the Democratic presidential ticket. ––– Subscribe to ABC News on YouTube: ABC News Digital is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: Watch 24/7 coverage of breaking news and live events on ABC News Live: Watch full episodes of World News Tonight with David Muir here: Read ABC News reports online: ABC News is the home to the #1 evening newscast “World News Tonight” with David Muir, “Good Morning America,” “20/20,” “Nightline,” “This