election integrity is with the states. They certified results not the VP
Election integrity by VP is not in the constitution
https://constitution.congress.gov/constitution/amendment-12/The Electors... and transmit sealed to the seat of the government of the United States, directed to the President of the Senate;–the President of the Senate shall, in the presence of the Senate and House of Representatives, open all the certificates and the votes shall then be counted; and it's not in the Electoral Count Act: (codified as shown here:
https://www.law.cornell.edu/uscode/text/3/15 which is the process of conducting the electoral count being used today.
Two tellers shall be previously appointed on the part of the Senate and two on the part of the House of Representatives, to whom shall be handed, as they are opened by the President of the Senate, all the certificates and papers purporting to be certificates of the electoral votes, which certificates and papers shall be opened, presented, and acted upon in the alphabetical order of the States, beginning with the letter A; The VP is just a certificate opener - with that said...
7 states sent in alternate certifications of electors to the National Archives.
Archives never sent those to VP Pence.
I don't know if these were established by the legislature of those states.
If they were, Archives should have sent them to the VP and he would have been bound to open them.
But that's all.
Congress handles conflicts\disputes\objections.