Just looking at Biden's twitter timeline, I see plenty of tweets that could be "fact checked," if we're using Trump's voter fraud claim as an example of what needs to be checked. Yet somehow, I doubt any of them will.
Examples:
- "36,000 Americans could be alive today if President Trump had acted sooner." [This is entirely speculative and impossible to prove, similar to Trump's mail-in voting claim]
- "The hard truth is Donald Trump ignored the warnings of health experts and intelligence agencies, downplayed the threat COVID-19 posed, and failed to take the action needed to combat the outbreak." [This is false, and certainly not a "hard truth". He took early action including closing the borders to China, which Joe Biden deemed xenophobic at the time.]
- "I've said it before, and I'll say it again: No company pulling in billions of dollars in profits should pay a lower tax rate than firefighters and teachers." [This is highly misleading, and could benefit from context, e.g. https://www.wsj.com/articles/does-amazon-really-pay-no-taxes...]
- "In the middle of this crisis, President Trump is trying to cut food assistance. It’s morally bankrupt." [This is misleading. He's not cutting food assistance; the USDA is attempting to add a work requirement to SNAP benefits.]
- "In the middle of the worst public health crisis in our lifetime, President Trump is actively trying to terminate health insurance for millions of Americans. It's unthinkable." [Highly misleading if not outright false.]
Are any of these black-and-white false? No. But neither is what Twitter is fact checking Trump for. If they were to apply fair standards, they would "fact check" Biden too. But they won't. And we all know why. Maybe it has something to do with the fact that the person in charge of this new policy has called Trump a "nazi" and a "racist tangerine."