Washington and the broader American electorate are sharply divided along partisan lines, but there are still some places where Republicans and Democrats in Congress share common ground. Democratic Sen. Elizabeth Warren and Republican Sen. Cynthia Lummis both think Congress needs to step up on cryptocurrency. House Speaker Nancy Pelosi, a Democrat, agrees with fellow Californian Rep. Kevin McCarthy, the top Republican in the House, in wondering whether stock trading rules for members of Congress could be tightened. And almost all lawmakers in Congress think something ought to be done to bolster U.S. competitiveness with China. Between a bill aimed at…