Why did he file N-400 if he already has a claim to US citizenship?
Because of poor communication, my husband did not know that his father was a u.s. citizen from birth. He always assumed that he naturalized.
On what basis was the deportation dropped?
He was in the process of being deported after filing for n-400. He confessed to an arrest in 1987 of misdemeanor marijuana posession. They investigated and found that there wasn't enough evidence as to the amount of marijuana. The deportation proceediongs were then dropped.
If the father had resided for 5 years (2 of them after age 14) in the US, then your husband should be a US citizen at birth.
Thank you. My husband has 5 (two older than him) other brothers and sisters who were born in the U.S. and have always been US citizens.