Let's assume President Trump is successfully impeached and removed from office on Monday/Tuesday (before his term expires and he leaves office on the 20th).
Would Vice President Pence take over and become president (in lists of presidents and numbered 46th president) for one week/less than a week? Would there be an inauguration for him? Would he get all benefits of a president/ex-president (even if his "term" as president was only some days)?
Would Vice President Pence take over and become president (in lists of presidents and numbered 46th president) for one week/less than a week?
Yes
Impeachment and conviction of the President would remove the President. Section 1 of the 25th Amendment states that: "In case of the removal of the President from office or of his death or resignation, the Vice President shall become President". This suggests that the Vice President would succeed to the office of President.
Would there be an inauguration for him?
Probably not
Given past precedent regarding presidential succession by the Vice President, all that is required of the new President is to be sworn in by a judicial officer who can administer oaths (like a judge or notary public), so no inauguration is necessary.
Would he get all benefits of a president/ex-president (even if his "term" as president was only some days)?
Yes
He has served as a former President and succeeded to the office - relevant laws like the Former Presidents Act (which assigns various benefits) only state that the person in question had to have held the office of President in the past, which would have occurred under Section 1 of the 25th Amendment when the President was removed from office.
If President Trump is removed from office for any reason before his term ends, Mike Pence becomes the 46th President of the United States for the remainder of Trump's term, whether that be five months or five hours. Joe Biden would then be the 47th President of the United States.
There would be an inauguration, in the sense that he would take the Oath of Office shortly after his predecessor's removal. It is unlikely that it would be the kind of grand ceremony that we see in front of the Capitol every four years - in the case of President Ford, his inauguration took place in the East Room of the White House.
Yes, assuming that the impeachment conviction occurs prior to the end of Trump and Pence's term in office. If Trump is impeached and convicted after he leaves office the conviction is largely symbolic, as he cannot be removed from an office he no longer holds - but the Senate (which will be controlled by the Democrats after Jan. 20) can then vote to bar him from ever holding national political office again, and such a vote only requires a simple majority to pass. Pence would then become the 46th president. Pence would probably not have a grand inauguration as there would be no time to plan such an event. I expect (but do not know for a fact) that he would get all the benefits of other ex-presidents.
