U.S.A. vs United States Attorney

U.S.A.

name
  • Dated spelling of USA. 

United States Attorney

noun
  • A title for some attorneys for the federal government of the United States of America. The head of the government attorneys' office and prosecutor's office for a court district in the U.S. federal district court system, which represents the government's position. 

How often have the words U.S.A. and United States Attorney occurred in a corpus of books? (source: Google Ngram Viewer )