Memorandum of Law in Support of Motion for Leave of Amici Curiae Scholar Seth Barrett Tillman and Judicial Education Project to be Heard at Oral Argument, District of Columbia & State of Maryland v. Donald J. Trump, in his official capacity as President of the United States of America, Civ. A. No. 8:17-cv-01596-PJM (D. Md. Dec. 31, 2017) (Messitte, J.) (filed by Josh Blackman et al.), ECF No. 78.