"We've had plenty of times when we have had enormous tension, with the impeachment of President Nixon.

VOA: special.2011.01.10

We had the impeachment of President Clinton, we had the Vietnam War, we had the Iran-Contra investigation, periods when the two parties had an enormously high level of tension.

VOA: special.2011.01.10

That was made possible when Republicans grossly overplayed the impeachment of President Bill Clinton.

WSJ: Karl Rove: Obama Gears Up to 'Flip the House' in 2014

The contrast to the Watergate investigation and the impeachment of President Nixon is stark.

CNN: Sen. Levin's closed-door impeachment statement

Representatives Committee on the Judiciary, I am opposed to the impeachment of President Clinton.

CNN: House Judiciary Committee hearing,