I think there are more such loopholes than most people realize.

From The Blind Spot: How Oligarchs Dominate Our Democracy by Jeffrey Winters: "When it comes to winning advantages for wealthy and powerful clients, lobbyists focus in on micro-details no one else is paying attention to but which could mean millions or billions saved by clients. 'Sometimes we were changing a word and that's all that we needed,' one lobbyist admitted."