The Conversation: What is the First National Tea Party Convention?

VIDEO: Andy Barr of talks about the national tea party
WATCH The Conversation: Tea Party Convention

The first national Tea Party convention gets underway in Nashville, Tenn today. It's the first large scale convention by a group that has risen to prominence in the last year with their protests against healthcare reform and the federal stimulus package.

In today's Conversation Diane Sawyer spoke with Politico reporter Andy Barr about how the Tea Party gained momentum. Who are the people attending this convention – and who are the people behind the convention? What is the future of this political party? All this and more about in today's Conversation.