With a new administration in the White House, the United States has emerged from its environmental hibernation. President Biden is leading a brisk reawakening with ambitious plans on climate change. At the same time, the continuing global pandemic has spawned an urgent demand for new financing ideas. So what about a green bond issue by the U.S. Treasury? It is out there in the investment ether — a move that would make a symbolic, if not substantive, difference for climate initiatives. “A U.S. green bond issuance would be a high…