A person born to an alien father and a US citizen mother is considered a citizen because of the law of soil or law of blood ?

*chief chike okafor is the owner of sunrise supermarket along benin-lagos road ug benin city. the officer of becd came to the building and requested for the last and lastest electricity bill from the 5 staff working for cheif chike okafor, instead of giving the electricity bill payment receipt to the officers they were beaten up because chief chike okafors staff had been working without electricity light for 8days. chief chike okafor who was not in the office when the officers came to his supermarket has come to you for any legal remedy. advise him.*