“Really it’s called a challenge.”
Per the Constitution, all challenges to Electoral Ballots are handled by Congress, not the VP. Congress can reject any ballot for any reason.
The State Legislatures are in control before the ballots are actually delivered to Congress. Congress determines the validity of ballots after they are delivered to Congress.
The VP certifies that the ballots were counted correctly.
In 2016, VP Biden certified that there were 304 ballots for Trump and 227 for Hildebeast, and that the ballot counts were correct. Pence did the same thing in 2020, he certified that the ballot count of the ballots sitting in front of Congress was correct.
What if the ballots that were certified fraudulent?
Congress determines the validity of ballots after they are delivered to Congress.
There is no provision anywhere in the Constitution that supports either of these statements.
The role of the joint session of Congress, in which the VP is the presiding officer (as President of the Senate), is to COUNT the electoral votes. That's it.
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.
That's a plain reading of the 12th Amendment to the U.S. Constitution. There's no room for Congress to be "rejecting any ballot for any reason."
duh..