With many americans frustrated over the iraq war and disappointed with misbehavior in washington , republican control of congress may be on the line .
许多美国人对伊拉克战争的不满以及对华盛顿政府不当行为的失望使得共和党可能有失去对国会控制的危险。
These problems have led to the development of reputation mechanisms which detect misbehavior and punish selfish peers , and also to encourage good ones .