Also in the region Mr. Heath, who specializes in econometrics and monetary policy, is widely seen as an orthodox economist. He would succeed deputy governor Manuel Ramos Francia, a Bank of Mexico veteran whose term finishes at the end of the year.The nomination is expected to be made after Mr. López Obrador takes office on Dec. 1. The appointment would need approval in the Mexican Senate, where Mr. López Obrador’s party has a comfortable majority,Mr. López Obrador, who won the July 1 presidential election by a landslide . . .