I am no tRump supporter, but I'm sure he was one of many that fought against it. As FortyTwo said, they can be a pain, and expensive, but how much is a life worth? Where I lived in Washington State new residential constrution over 3,000 sqft required sprinklers, that would have saved my neighbor's house, and the rebuilt house was sprinklered.

It's ridiculous that they preferred to jeopardize the lives of tenants over the extra costs of installing sprinklers.

Even though someone was killed, at least the building held up well.