I don't know if people are still looking for this man's birth data or not, but I came across it in AstroDatabank so here it is: Stephen Miller, born August 23, 1985, @ 16:53 (4:53 P.M.), Santa Monica, CA. This is rated AA, from the birth certificate.
I can't post charts myself, but here's a link to his AstroDatabank profile, with chart:
https://www.astro.com/astro-databank/Miller,_StephenClick on the chart to make it bigger, and see current transits.
I don't like the look of this guy's chart; he looks dangerous, to me. It's that Mars, in the 7th house, squaring Saturn, his chart ruler, in the 10th; Saturn in Scorpio, Scorpio on the MC, Pluto in Scorpio conjunct the MC from the 9th house - yikes. I don't like it. I feel very uncomfortable knowing this guy is advising Trump.