Why did Hillary refuse to show her emails in return for Trump showing his taxes?

Because she knows Trump's Personal INCOME Tax Returns are a Red Herring that the Press would run with in behalf of her while the Public wouldn't understand a thing if they were to look at his returns while without the aid of the Press the Public can understand the simpleness of an email and its contents.

Does it?

I think it would be fair for her to show her taxes in return for him showing his taxes.

Oh wait she already did.

Trump doesn't get to play quid pro quo until he comes up with a quo first.

Because she illegally ignored the law and deleted them in a way that recovery of 33,000 e-mails could not prove her guilt in criminal, corrupt acts that undermined our National Security. Hillary was very, very quiet and failed to give Trump any answer. GUILTY...

Hillary and fairness typically do not go together. Hillary is a liar, a blamer, and a deceitful person. That is it.

Name one promise Cheeto has ever kept or one deal he hasn't broken.

That's why.

sounds like attempted blackmail to me..

Her emails are between her and the FBI.

Because she has stuff to hide from american citizens

When was this offer made?

who gives a sh*t?