WASHINGTON — It’s been one of those spectacle weeks on Capitol Hill, the likes of which history might just stop to recognize, even if Trump-era Washington pauses for nothing... Mr. Romney is the rare Senate Republican — actually the lone Senate Republican until late Thursday — who is vocally pushing for witnesses to be called in President Trump’s impeachment trial. He is also the only Senate Republican who is seen as a possible vote to convict the president, an added distinction since Mr. Trump got every House Republican to fall in line.... “I think this is Senator Romney’s moment to...