[Miss Marple]

Warren Street....Supreme Court Building?

[null and void]

Warren Street....Supreme Court Building?

GMTA

[ravingnutter]

I don't know about cross-streets, but Google says:

U.S. SUPREME COURT BUILDING
1 FIRST ST. N.E.
WASHINGTON DC 20543

A Google search on "Washington, D.C., Warren" doesn't turn up anything significant, unless they plan on attacking a lawyer's office or Warren Burger's gravesite in Arlington Cemetary.