He fills out forms with the bank that says he owns 1 billion worth of property. Since his net worth is so much higher than the amount of the loan, they offer him good terms. a low interest rate.
Have you ever gone to a bank for a loan? Especially today in such a very tight lending market? There is zero chance such a scenario could go down as you describe.
ok, a couple of things.
1) trump isn't like you or me. He is a billionaire and it is his company applying for the loans. The loan process for him is not the same as the same process they would follow for you.
2) these loans are all from years ago. They aren't in the last few years. He has been doing this for decades.
3) the ways in which he lied are harder to prove than if you lied to a bank. Like, how do you establish how much mar-a-lago is worth? It is a much harder question to answer than "how much is in your bank account" or "how much is your single family home worth".
4) there isn't any doubt that he did these things. So saying there is zero chance that it happened is incredibly foolish because it is documented. For example, trump filled out a form saying his own apartment in new york (the one he lived in) was 30,000 square feet. He then used an estimate of how much a 30,000 square foot apartment would cost as it's value. His apartment is actually 11,000 square feet. He triple it's size, and therefore it's value, in legal documents. There is no denying that is fraud. He did it with all his other properties too, but that one is the most open and shut case as far as I am concerned.