One of the biggest subsidies / handouts is the home mortgage interest deduction. Luckily it is capped at like $750k, so the truly impoverished are taken care of.
Indeed.
The truly impoverished don't own their residence.
Even if they did, they're not likely to be paying much interest on a relatively small loan to cover what is likely a very modest home by Cyclone Fanatic standards. They're not going to have much income tax liability or have a very high marginal rate, either, so the impact of the deduction is very limited.
But if you're part of a two-income household of two college grads with their kids who bought a $675,000 house in a prosperous midwestern suburb (e.g., Ankeny), then the MID is a nice windfall.