Hey suanj !
I can't find a WWI Card either
Actually, I can't figure out his given name :
Alphonso (Alfonso) 1884 manifest
Lorenzo 1900 manifest
Lawrence 1900 census (born Aug 1880)
Frank A 1910 census
Perhaps he changed his last name when he left home?
Or maybe he moved back to Italy.
I tried all the 'M' comunes in Piedmont also - I couldn't find anything similar