Then came Lyndon B. Johnson’s “guns and butter” excesses, which were intensified over one perfidious weekend at Camp David, Md., in 1971, when Richard M. Nixon essentially defaulted on the nation’s debt obligations by finally ending the convertibility of gold to the dollar. That one act — arguably a sin graver than Watergate — meant the end of national financial discipline and the start of a four-decade spree during which we have lived high on the hog, running a cumulative $8 trillion current-account deficit.
