The majority of my colleagues seems to have put their trust in our Court’s ability to prevent Presidents from becoming Kings through case-by-case app… - Ketanji Brown Jackson

This Court holds that Executive branch officials are not absolutely immune from compulsory congressional process—no matter how many times the Executive branch has asserted as much over the years—even if the President expressly directs such officials’ non-compliance.

Conducting investigations is the means that Congress uses to carry out that constitutional obligation. Thus, blatant defiance of Congress’ centuries-old power to compel the performance of witnesses is not an abstract injury, nor is it a mere banal insult to our democracy. It is an affront to the mechanism for curbing abuses of power that the Framers carefully crafted for our protection, and, thereby, recalcitrant witnesses actually undermine the broader interests of the People of the United States.

Unfortunately for DOJ... these contentions about the relative power of the federal courts, congressional committees, and the President distort established separation-of-powers principles beyond all recognition. Thus, ultimately, the arguments that DOJ advances to support its claim of absolute testimonial immunity for senior-level presidential aides transgress core constitutional truths...