I hope you don't believe that. He's the deputy chief of staff (policy) and the Homeland Security Advisor. He was the architect of Trump 1.0 immigration policy and a major voice in Project 2025. In his role, he will have near unfettered access to Trump and will be one of if not the last voice to be heard by Trump who famously tends to go with the last person he hears from. The US Immigration policy will be Miller's viewpoint.Stephen Miller doesn't control immigration policy, so he can think whatever he wants.