But they represent a significant opening salvo for the Senate, where lawmakers have struggled for months to capitalize on widespread enthusiasm on Capitol Hill for taking action against China.By broad bipartisan margins, senators voted to add the measures to the annual defense policy bill.... One, which passed by a vote of 91 to 7, would ban the sale of farmland to certain foreign adversaries to bar businesses based in or working as agents of China, Russia, Iran and North Korea from purchasing