When directed to do so pursuant to section
288b
(c) of this title, the Counsel shall intervene or appear as amicus curiae in the name of the Senate, or in the name of an officer, committee, subcommittee, or chairman of a committee or subcommittee of the Senate in any legal action or proceeding pending in any court of the United States or of a State or political subdivision thereof in which the powers and responsibilities of Congress under the Constitution of the United States are placed in issue. The Counsel shall be authorized to intervene only if standing to intervene exists under section 2 of article III of the Constitution of the United States.