(CNN) Maybe the fiasco of the late reporting results from the Iowa caucus this year will have a positive legacy -- the end of the caucus process and the invitation to another state to start the delegate selection process.

The caucuses are an embarrassment to the Democratic Party and the United States. This is no way to pick a nominee.

It's not just that the Iowa caucus is unrepresentative demographically -- more than 90% white. It's far more white than a national party that prizes its diversity. The problem is even more fundamental.

Consider the secret ballot, a foundational value in democratic systems. The caucus is a public process, so that neighbors must advertise their choices in public. This is just wrong.

But the problem is much worse. The caucuses -- especially in this cursed year -- demand hours of commitment. This limits the number, and kind, of people who can attend, despite Iowa Democrats allowing satellite caucuses this year. Many people who work at night still cannot attend. People who care for children or other relatives cannot attend. People who have other commitments cannot attend.

Read More