Results of Christians in Government

Okay. I am of the Anabaptist group, which strongly believe that Christians should not fight, and should not be involved in government. However, there are many Christians who don't believe that. What are your ideas of Christians being in government? In a perfect scenario, what would you see Christians doing in the US government? I seriously can't see anything that Christians can do that "secular" people can't... So, show me the good Christians can do in government.

*note, this is not a debate about whether Christians should be in government, but I just want to hear what Christians should do in government*