It seems like the left and the right have entered into a competition as to which side can make the silliest tax observation. The New York Times came out strong for the left as its team of reporters was handed fragments of Trump’s 1995 tax filings. They proceeded to “explain” flow-through entities and net operating losses, fairly mundane tax concepts, as if they were tools of Satan. It did not take long for the right to strike back at least as imprudently.

How Should a Disregarded Single Member LLC File a W-9?
Although Form W-9 has some other purposes, a company will usually ask you to fill it out if you are a business-to-business service provider . If you don’t provide a TIN to your customer, they may have to subject you to backup withholding . If it is my company that asks you for the W-9, I am not going to do backup withholding if you don’t send me the W-9. I’m just not going to pay you until you cough it up.
I believe in learning from experience. But it is better if the experience you learn from is other people’s experience. That is why a very large percentage of my tax writing is from court opinions, most often the United States Tax Court. This piece is my own experience.