What matters is not their past but this country's future. All the talk about whether Clinton has been genuinely contrite, or contrite enough, is completely beside the point. No one needs to see someone grovel. We certainly do not need to see the President of the United States grovelling to keep his job, especially since he must continue to represent us to other countries and to the world, so long as he is in office. Repeated perjuries and an orchestrated campaign of obstruction of justice have happened.
Nothing can change that.
You cannot unring the bell. All that can be done now is to choose whether perjury and obstruction of justice will be condoned or punished. There is no third way, however much some politicians and journalists might like to have one. Censure means less than a traffic ticket. You can ignore censure with no consequences.