Is the open-air, public space surrounding the Supreme Court a traditional public forum?

QUESTIONS PRESENTED 1. Is the open-air, public space surrounding the Supreme Court a traditional public forum, despite a flawed, constitutionally suspect challenged law that criminalizes all assemblies and all displays in the area, such as the unfurling of a banner? 2. Is 40 U.S.C. § 6135 overbroad and does it lack a saving construction, when the plain text of the statute would even prohibit individuals from standing on the Supreme Court Plaza while wearing T-shirts emblazoned with group affiliations and would prohibit nearly any group, even litigants from congregating on the Plaza? i