Because...
...the great unwashed believe pundits who lie through their asses.
The Republicans wouldn't let the Democrats do anything. They blocked and just said NO! to everything. They wanted the government to fail and it basically did so. If anyone is UnAmerican, it's Republicans who can't find the decency to admit they lost that election. Instead, it was, "We're going to tear down this Administration and we don't give a shit who gets hurt."