Former Texas Congressman Beto O'Rourke, whose ultimately unsuccessful bid for the U.S. Senate in 2018 earned him a fervent and national following, announced Thursday morning that he is running for president in 2020. "This is a defining moment of truth for this country and for every single one of us," O'Rourke said sitting alongside his wife, Amy, in his official announcement video released Thursday morning. "The challenges that we face right now; the interconnected crises in our economy, our democracy and our climate have never been greater."