Really? Or wishful thinking?
No, that is for real. He is using a SS number that was used before. “He” got this number around age 16, probably when he got his first official job, at Baskin Robbins in Honolulu. Typical White Granny was a bank VP and could have tried to help him come up with one; she must have known he wasn’t a real citizen and she probably got one for him that he could use to work in the US.
He has actually used several different ones, but the main one he uses was used before, if I recall correctly, around 100 years ago.
Our President literally would be rejected by eVerify (FReepers have done it), meaning you should turn him down to clean your toilets.