William J. Brennan,
Nixon v. Administrator of General Services…
“ Our role in reviewing legislation which touches on the fundamental structure of our Government is therefore akin to that which obtains when reviewing legislation touching on other fundamental constitutional guarantees. Because separation of powers is the base framework of our governmental system and the means by which all our liberties depend, Title I can be upheld only if it is necessary to secure some overriding governmental objective, and if there is no reasonable alternative which will trench less heavily on separation of powers principles. ”
