Andy Shaw claims that Republicans went after Clinton, as payback for Democrats going after Nixon. Shaw writes:

Congressman Henry Hyde made some surprising comments Thursday on the impeachment hearings of President Bill Clinton. He now says Republicans may have gone after Clinton to retaliate for the impeachment of Richard Nixon.

Actually, Hyde never said any such thing, despite the glaring headline that says he did. Shaw's own article shows that he's putting words into his mouth.

Andy Shaw asked Hyde if the Clinton proceedings were payback for Nixon's impeachment.

"I can't say it wasn't..." said Hyde.

That does not mean the same thing as: "Clinton impeachment was retaliation for Nixon, says retiring congressman". And as Neal points out, Nixon was never impeached.