If Trump is impeached, can American politics regain the trust of the voting public? Either way, there is no guarantee that the Democrats will win the 2020 election. Pat Buchanan, author and former adviser to presidents Richard Nixon and Ronald Reagan. Eleanor Clift, columnist with The Daily Beast and a contributor to MSNBC.

Also, with the benefit of hindsight: Jacques Chirac had one of the longest political careers in Europe, but he may best be remembered internationally for leading France's strong opposition to the US-led invasion of Iraq in 2003.