As the public face of President Donald Trump’s Department of Government Efficiency, billionaire tech CEO Elon Musk has an expansive portfolio that spans across the many levers of government — and that could intersect with his wide range of business interests. But unlike another high-profile “special government employee” working in Trump’s White House, AI and crypto czar David Sacks, there’s no evidence that Musk has obtained a conflict of interest waiver. Such a waiver would outline the steps he’s taken to avoid overlaps between his business interests and his government work, include an explanation from the White House counsel about…