Politics & Government Joe Biden Speaks To Pittsburgh Union Members, Kicks Off His Presidential Campaign 6:20pm April 29, 2019 by Don Gonyea Politics Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2019 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered National How Harris' past debates set her up for sparring with Trump by Deepa Shivaram National New details emerge in the Georgia school shooting investigation 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate