State of the Union: Biden's Pitch to the Nation

<p>Under the close gaze of his critics - and millions of American voters - Joe Biden delivered arguably the most significant State of the Union address in recent times.</p><p>The president chose to focus on his economic record, his plans to to fix America's immigration system and repeatedly took aim against Donald Trump.</p><p>The Americast team chew over the president's speech with the help of Joe Biden's former speechwriter, Jeff Nussbaum, who told us what it's like to work with him and how you judge the success of a speech like the one Biden just...