(1) His first wife was Alice Silverthorne of the USA , whom he met in Paris in May 1921 and married in Chicago in September of the same year .
(2) His first wife was Alice Silverthorne of the U.S. , whom he met in Paris in May 1921 and married in Chicago in September of that year .

Do these two sentences mean the same thing?

Select from:
 (1). no.
 (2). yes.
(2).