the minute he swears in if that minute is after 12:00 noon
You have to be 35 by the time you take actually take office.
inauguration day January 20
He is sworn in & is acting President until that time.
Because He didn't know how to become president at the time
Benjamin Wade who voted to remove Andrew Johnson from office and become president himself is the obvious answer to your question. At that time, the pro temp was next in line for president after the vice president.Former pro tempore John Tyler did actually become president and pro tempore Wm King who became vice-president may have had some some presidential ambitions. Former pro tempore Lewis Cass ran for president.
The Speaker of the house will become President.
The president of the United States would remain president until he died or resigned or was impeached; at which time the Vice President would become president.
If both of them are killed at the same time then speaker of the house becomes president
HE BECAME THE 28TH PRESIDENT OF THE UNITED STATES
Eisenhower was dead at the time, and not vice president.
2008
An incoming president of the United States becomes President at 12 noon on January 20 next following the election in November.