Stephen Miller stunned a congressional hearing by admitting his role in crafting a controversial new federal policy that could impact millions.
* He revealed a previously secret memo that outlines plans to use a Cold War-era law to fast-track mass deportations, bypassing normal judicial review.
* Miller claimed the policy is necessary to combat an "invasion" at the border, a term that has drawn sharp criticism from civil rights groups.
* The admission came during a heated exchange where a lawmaker confronted him with leaked internal emails showing his direct involvement.
* Legal experts say this is the first time a senior White House official has publicly acknowledged using such extreme legal tactics.
* Opponents are already vowing to file immediate lawsuits, arguing the policy violates constitutional due process rights.