2 U.S.C. § 137 — Use and regulation of law library

The justices of the Supreme Court may use the law library for free, at any time. The justices can also make rules for how people use the law library while the Court is in session. These rules must not conflict with the law. But there's a limit: these rules can't stop someone who is already authorized to take books from the Library of Congress. That person can still get into the law library and use its books, the same way they're entitled to use the books of the general Library.