Probably because we expect our leaders to have a minimal amount of ethics and integrity and to uphold the so-called "Rule of Law" and the Constitution that they have sworn an oath to uphold.
The emergence of America's Criminal Elite
We are the Law so therefore we are above the Law
The Clinton's simply took public corruption to a new level !!!!!!!!
It really doesn't matter if they are Republican or Democrat.
Uncle Bill's posts explain why have 50% of the registered voters no longer vote and over 60% of the population doesn't trust the U.S. Government.
It also helps explain why Bush and Ashcroft have never expressed any interest in pursuing the Clinton's for their crimes and the destruction of White House property,(the ultimate slap in the face to the U.S. public by both the Republicans and Democrats)