As far as we know from the small amount of Trump's taxes that we have seen LFA, it seems he followed the real estate loop holes. We don't have a full account of his taxes though. It may be his view as you say...that it is not wrong, but is it right? Especially when Trump then complains about our failing infrastructure, he especially seems hung up on our lousy airports compared to foreign ones. He can not complain, if he does not contribute.