Federal Reserve Governor Lael Brainard pressed the case for a digital dollar, saying Monday that a cryptocurrency backed by the central bank could provide a variety of benefits. Providing financial services to the nearly 1 in 5 Americans considered “underbanked” is one of the advantages Brainard cited in a speech to a conference presented by Coindesk. She also cited the safety of a Fed-backed system, as well as improvements in efficiency and cross-border payments, or transactions between people in different countries. While stressing the importance of moving forward carefully, Brainard said the Covid-19 pandemic strengthened the need for a system...