A Republican and a Democratic senator have called on the Federal Reserve and the publisher of a foreign policy magazine to provide more details on 2015 meetings involving senior U.S. financial officials, a Russian central bank official, and Russian spy Maria Butina. Now, Senate Finance Committee Chairman Chuck Grassley R-Iowa, and the top Democrat on that panel, Sen. Ron Wyden, D-Ore., want more information. The meetings involved Butina, now-former Russian Central Bank Deputy Governor Alexander Torshin, former Federal Reserve Vice Chairman Stanley Fischer, and former Treasury Undersecretary for International Affairs Nathan Sheets. They were reportedly arranged by the Center for...