Well you know, I've been thinking about it, and I realized that following this logic, it means that her loyalties are to the Democratic party first, rather than America.
The person that gets her dander up and yelling "traitor" is someone that has "betrayed" democrats, even though he seems like a nice guy devoted to American ideals. But Michael Moore, even though he does everything he can to make people disrespect and hate America, he's not a traitor according to Susan.
Here is all the Democratic party is about :
1. Abortion
2. Gay Issues
3. Internationalism (subverting America's sovereignty)
4. Government control and expanding bureaucracy (socialism)
5. Any other fringe, leftist, lunatic thing that crawls through the door