WASHINGTON – U.S. Senators Martin Heinrich (D-N.M.), Elizabeth Warren (D-Mass.), Bernie Sanders (I-Vt.), Martin Heinrich (D-N.M.), Ed Markey (D-Mass.), Sheldon Whitehouse (D-R.I.), and Jeff Merkley (D-Ore.) sent a letter to Secretary of the Treasury Janet Yellen and newly-appointed Treasury Climate Counselor Ethan Zindler, urging the Treasury...