Yes, the VP position can remain vacant indefinitely, or at least until the end of a term when another VP can be elected through the normal process. The only thing that is lost is the tiebreaking vote. Well, and the fact that if the President has a colonoscopy and is put under sedation nobody is available to be acting President. I don’t think the House Speaker is able to take that job for just a few hours like the Vice
President can.
Kamala Harris was actually Acting President for 85 minutes in 2021, and probably at least once after that.
And it isn’t a hard rule the President has to nominate a VP, although that makes some things more difficult.
Yes, the VP position can remain vacant indefinitely, or at least until the end of a term when another VP can be elected through the normal process. The only thing that is lost is the tiebreaking vote. Well, and the fact that if the President has a colonoscopy and is put under sedation nobody is available to be acting President. I don’t think the House Speaker is able to take that job for just a few hours like the Vice President can.
Kamala Harris was actually Acting President for 85 minutes in 2021,
and probably at least once after that.https://www.cnn.com/2021/11/19/politics/kamala-harris-presidential-power/index.html
(nope, she did it just that once. https://en.m.wikipedia.org/wiki/Acting_President_of_the_United_States )