"Fraud vitiates everything".
Very basic legal principle that is always upheld in court.
Contracts, documents, judgements, votes and certifications based on fraud have no legal standing once the fraud is proven in court.
Show me that specific text in the Constitution !
A regular court does not have jurisdiction no matter how many times you prove fraud or any other crime. The Constitution provides the only remedy impeachment, trial in the Senate. In reality are pixies going to sprinkle “honesty dust” on enough Senators to do anything ?
There is no court with constitutional jurisdiction.