Turbotax keeps telling me that my mortgage interest deduction needs review. I don't have a mortgage, and thus didn't pay interest. There's no way to silence it. It feels strangely good to have exposed a UI bug where TT is upset that I own a house but don't owe a bank for it.
Let me approach it a third (fourth?) way: if USG controls the interest rate, why not set it at 20% and let everyone make a lot of money by depositing cash in the bank? Answer: bc it's like the minimum wage. Reality gets a vote.