His immigration entry to the US shows 1925.
Could you provide us with that immigration entry? I would like to see it.
I thought I could, but after doing a little research I found out that I can´t.
In here, you will find his wife´s (Elizabetta) entry into the US. According to Ellis Island passenger manifests she travelled from Palermo, Sicily with her brother Calogero Minore. So Salvatore Maranzano (her husband) was not with her on this trip.
In an interview for the newspaper L´Ora Jan 23, 1962 former Mafia member Dr Melchiorre Allegra stated that Maranzano backed him for political office in 1924, showing Allegra around in the city of Palermo.
Former secret service agent Joseph Palma testified for the Kefauver Committee that in 1925 Maranzano moved to Canada (from Sicily).
And Joseph Bonanno (believe it or not...

) says "My life took a decisive turn at the end of 1925 when Salvatore Maranzano, a hero of mine in Sicily, immigrated to the United States."
I believe that Maranzano came to the USA after a short stay in Canada. So he likely entered through Niagara which is why I can´t find him on EllisIsland.org