Former Pres. Joe Biden delivers one of his first public speeches since leaving office. He is expected to speak about safeguarding Social Security amid Republicans’ current threats to it at a conference in Chicago. https://abcnews.go.com/Politics/biden-make-post-presidency-speeches-defend-social-security/story?id=120827366 ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G Watch 24/7 coverage of breaking news and live events on ABC News Live: https://www.youtube.com/watch?