First, 4 states are within .6%. Those have to be recounted and should be recounted. But recounts are not going to uncover massive fraud. The problems like not allowing observers into the vote counting rooms, people taking ballots out of the secure room to do who knows what, and similar incidents are not going to result in any changed votes.
People seem to think voter fraud takes place out in the open and if it exists it will be easy to spot. It is not. In fact, most voter fraud is hard to spot. You have to look at data from multiple sources. In 2018 a study found 44,000 people voted in two states, which is illegal and voter fraud. This is so common in some states people openly joke about it. But to find the perpetrators, you have to look at the voting records of every state and compare identities which can be very hard.
If Republicans do anything as a result of this shit show, they must either end mail-in voting as many countries have done because of the problems it presents, or get it cleaned up and done uniformly. For example, some states sent mail-in ballots to every registered voter. That means literally millions of ballots went out to people ineligible to vote in the states that sent the ballots out. Because mail-in voting was implemented hastily, states did not clean up their registration data first, to ensure only eligible voters got a ballot.
But the obvious problem is mail-in ballots are the least secure form of voting. Its less secure than raising your hand. Think about it. Once you fill out your ballot and drop it in the mail, you lose control of it. How many people touch your ballot after that? Who opens it? Who counts it? You have no idea. When you vote at a machine, you control your vote from beginning to end. And that is the way it should be for everyone. Then we remove all the doubt about whether the Chinese printed fake ballots and all the other stuff we are hearing about.