In the lead-up to November's presidential election in the United States, groups on the right and left are sounding the alarm at the influence of money on US politics.

HARDtalk's Katya Adler speaks to one guest who knows a lot about that. At the height of his career he made millions as a career lobbyist in Washington, wining, dining and influencing lawmakers. His fall from grace was dramatic and saw him publicly disgraced and imprisoned for fraud and bribery.

A free man once again, Jack Abramoff says he is a reformed man, lobbying to correct what he describes as a corrupt system where he says his behaviour was and continues to be commonplace.

You can watch the full interview on BBC World News on Tuesday, 25th September 2012 at 03:30, 08:30, 15:30 and 20:30 GMT. It also broadcasts on the BBC News Channel in the UK at 04:30 BST on Tuesday, 25th September and 00:30 BST on Wednesday, 26th September 2012.

Watch recent episodes online (UK only) or subscribe to our podcast. Find out who is coming up on the programme by following us on Twitter .