He called neo-Nazis, neo-Confederates, nativists, and white separatists "very fine people" after the Unite the Right rally at the University of Virginia campus in Charlottesville in 2017 that left a counter-protester dead. He has repeatedly defended the Confederate States of America and its leaders from people who want to remove Confederate statues. He ordered his DOJ lawyers to go to court and argue that juvenile Mexican and Central American asylum seekers aren't entitled to basic essentials like: soap, toothpaste, showers, clean water to drink, or a dark place to sleep. He called for a Hispanic judge to recuse himself from a high-profile lawsuit for the sole reason of being Hispanic. He pardoned a disgraced former sheriff who was convicted of unlawfully discriminating against Hispanic people in Arizona. He appointed an acting director to USCIS that thinks the Statue of Liberty poem should be rewritten to only apply to European immigrants. His CBP department has illegally detained at least 3 American citizens in border detention, who were all Hispanic - and no CBP officials were fired by him after this was discovered. I could go on forever, but it would take forever.
He's a white nationalist. Don't doubt it for a second.