By RICARDO CASTILLO   “Iron Lady” Named Tax Collector Raquel Buenrostro Sánchez was appointed as Mexico’s new Tributary Administration Service (SAT) director on Thursday, Dec. 18, by President Andrés Manuel López Obrador (AMLO). She replaces Margarita Ríos-Farjat, now the 11th member of the Supreme Court of the Nation. Buenrostro (whose last name literally means Good Face) was promoted to the