Subscriber content previewWASHINGTON — Byron Donalds, a Republican congressman running for Florida governor, on Monday announced legislation intended to prevent artificial intelligence data centers from driving up utility costs, the latest sign of a political backlash over the new technology. The proposal, if passed by Congress, would require data centers to obtain all their electricity and water needs from private sources, rather than the power grid or public water systems. The idea aligns with an earlier, voluntary initiative from President Donald Trump.