Original sentence: As another example, in Poland you are required to pay exorbitant fees for permission to cut down a tree on your property; the fees depend on the tree's age and trunk circumference, often reaching $50000  for a single 30y old tree.Enforcing the law for everyone would stop the abuse, and give an incentive for a law change to have the fees reduced to reasonable amounts.Especially, a policy that is hardly ever enforced is likely to be used as a tool for discrimination.For example, some IRS offices in Poland will reject (and fine) papers from a company that puts excise duty on an invoice, while in the interpretation of other IRS offices that company would be fined if excise duty is not written on the invoice.Having a set of rigid rules serves as a way to limit the powers of the person doing enforcement, ensuring equal treatment for everyone.However, these fees are hardly ever enforced -- however, anyone risks paying a fine of twice the amount of the fee at a whim of an official.In some cases, such policies are deliberately established to allow unchecked freedom for officers; in such cases the rules are intentionally self-contradicting, unclear and/or otherwise impossible or implausible to obey.On the other hand, a zero tolerance policy is a good way to fight corruption
Edited sentence: On the other hand, a zero tolerance policy is a great way to fight corruption