[El Gato]

he simple fact is that the SCOTUS swore him in,

Being sworn, not "sworn in", is merely the final requirement to become President, other than the calender and clock. It does not *make* one President by itself.

[Kevmo]

Being sworn, not “sworn in”, is merely the final requirement to become President, other than the calender and clock. It does not *make* one President by itself.
***Sure it does. When did GWB become president? Reagan? Clinton? All at the same moment —when they were sworn in by the chief justice.