Actually, that’s legit

 A Wisconsin airport explains why a Biden event is allowed while a Trump rally isn’t:

The Trump campaign had initially planned to hold its Oct. 23 rally at Mitchell, but their request was denied. An airport spokesperson said the tenant was told that all special events that are “non-aeronautical in nature” are in violation of its lease with the airport. The event also would have impacted flight operations and been a violation of the city’s ban on large public gatherings, according to officials.

Instead, the president’s campaign moved to Stein Aircraft Services in Waukesha.

On Friday, when asked why a Biden event was allowed but a Trump event was not, a spokesperson said it does not allow political rallies on the airfield.

“The Airport does not allow political rallies on the airfield, regardless of which candidate requests it. Biden is hosting a small private meeting with about 12 people. This is the difference between a 12-person private meeting inside a building vs. a 20,000-person rally on the airfield, compromising the safety and security of airline operations,” said Harold Mester, director of public affairs and marketing for the airport.

That actually makes sense. Since no one is coming to the Biden “rally”, it really can’t be considered a public event.