If our congressmen were employed in the private sector, they would be subject to periodic performance reviews. A supervisor would evaluate them based on their productivity, ability to get along with co-workers, attendance, cooperation, quality of work product and whether they are team players.
Based on these criteria, most current congressmen would receive written warnings, with copies placed in their personnel files. Many would be terminated on the spot. Few would qualify for a salary increase.
Of course, our congressmen are not subject to such scrutiny, so they make no effort to improve. They simply go to their heavily funded PACs for advertising money to counter the criticisms they receive.