You do not need to be a tax expert. In fact, you can be a tax idiot.

Some individuals aren't required by law to file (taxes).

When lawyers for different government entities disagree, that's the appropriate measure to take. When the opinion is issued, we'll be happy to comply with it.

This issue is not about an individual. This is about the law. Is this person in a class of people that the law prohibits from serving on the airport board?

For every expert there is an equal and opposite expert; but for every fact there is not necessarily an equal and opposite fact

I'm an idiot for not doing it,