I just saw your post and have found the following on Christian Carl Otto Sørensen.
He arrived in New York City aboard the S.S. United States from København on 4 Jun 1923, destination Bell, California.
He applied for American citizenship on 20 Mar 1925. He was single and living at 207 Fishburn Avenue, Bell, California.
In the 1930 census he is listed as Chris O. Sorensen living at 3686 Virginia Avenue, Lynwood, California. He is still single.
I have found no records for him after 1930.
Med venlig hilsen
North Carolina, USA