Trust me the people I work for spent a bundle finding out everything they could including medical, a very thorough investigation. It’s like a vetting for important office, which is important when you hire people into positions of trust. You see we’re not hiring a dog catcher. Trump wants to be president. Now, he’s never held elected office so it’s all alien to him. But it’s important that all candidates are vetted; we can see the results of not vetting in the last guy elected.
Your employer spent money to see your tax returns? I think not.