In public, White House deputy chief of staff Stephen Miller is putting his heart into his work promoting President Trump’s budget . He’s doing TV and radio hits for the Big Beautiful Bill , posting on X non-stop about it, and sparring with Republican senators who aren’t thrilled about the bill potentially adding trillions to the deficit.

At home, though, things may be a little more complicated. Miller’s wife of five years, Katie Miller , is now working closely with Elon Musk, who has emerged this week as the number-one enemy of the Big Beautiful Bill amid a fast-escalating feud with Trump.

Miller had been working for Musk as an advisory member in the Department of Government Efficiency from the beginning of Musk’s brief stint in government. (Having served as a spokesperson fo

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