Drinking lead can damage people’s brains, but Kansas Attorney General Kris Kobach opposes a plan to remove lead water pipes.

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In their letter, the attorneys general wrote, “[The plan] sets an almost impossible timeline, will cost billions and will infringe on the rights of the States and their residents – all for benefits that may be entirely speculative.”

Kobach repeated this nearly verbatim in a March 7 post on X (formerly Twitter).

Buttigieg responded by writing, “The benefit of not being lead poisoned is not speculative. It is enormous. And because lead poisoning leads to irreversible cognitive harm, massive economic loss, and even higher crime rates, this work represents one of the best returns on public investment ever observed.”