On the flight to New York to start my career, I happened to sit next to Sam Brownback. He was a sitting U.S. Senator from Kansas. He wanted to know why I was leaving. I told him the truth: the money. I was carrying law school debt large enough to make the compensation gap between New York and Kansas City feel less like a preference and more like arithmetic. I had no affinity for New York. I was a George Brett fan. I assumed I would be back in a few years.

I am writing this from London.

Kansas did not fail me. The market rewarded concentration elsewhere. That dynamic repeats itself across the Midwest every year — in thousands of individual decisions that collectively reshape the demographic and fiscal profile of entire states. It is also, as it turns out, the actual story behind the Kansas Medicaid budget.

The budget debate in Topeka runs on a familiar track: spending grew too fast, the baseline ballooned, somebody let the lid off. The arguments are not wrong. They are answering the wrong question. Kansas did not adopt full ACA Medicaid expansion. This is not a story about a state that lurched left. It is a story about age.

Elderly adults and people with disabilities are 23 percent of Kansas Medicaid enrollees and nearly 69 percent of spending. The cost per elderly enrollee runs more than $20,000 per year. The cost per child runs roughly $3,600. Same program. Six-to-one cost ratio. That is not a design flaw. It is a demographic fact.

Kansas's median age has risen from 35.2 in 2000 to around 38 today. The ratio between working-age taxpayers and dependents is the budget — and it is moving in the wrong direction. These states cannot cut their way out of demographic decline. They have to grow their way out. This week's essay makes the full case — and looks at where the capital to do it actually exists.