Mike Bloombergwants to be President of the United States, and I get it—it seems like one out of every three people is running for president these days. It’s really become a thing to do, like cutting the cable cord, or bragging to all your co-workers that you’ve gone Keto.

I appreciate the temptation: leader of the free world, big house in Washington, Camp David, the cool airplane, the G-7 summit, the egg roll on the lawn—all that stuff, blah, blah, blah. Even for a wildly wealthy person, the job has an allure.

But...