The code does not specify how or by whom the rules will be enforced.
The Supreme Court issued an ethics code on Monday, following a series of revelations about undisclosed property deals and gifts that heightened pressure on the justices to do so.
The justices stated in a statement that the code of conduct was established "to set out succinctly and gather in one place the ethics rules and principles that guide the conduct of the members of the court."
It was unclear how the rules would be enforced, and the court stated that it was still investigating how any code would be implemented.
"For the most part, these rules and principles are not new," the court said, adding that "the lack of a code,
however, has led in recent years to the misunderstanding that the justices of the Supreme Court have."
Revelations of lavish vacations and expensive gifts have highlighted how few ethics rules bind the justices, but under the new code,
it is unclear which of those activities would violate the rules — and who would decide.