So? Who is going to know or enforce it?

Most bribes are not obvious. More like give money to the charity my brother in law runs. The charity even does some good, but the real purpose is to pay the brother in law a nice salary and pay for family trips to various places the charity operates. (You should be suspicious anytime the family of a politician has any association with a charity - it might be a real charity but often it is a way to hide bribes)

"Speaking assignments" where you pay someone $8 Million to read a prepared speech for an hour is another common way to bribe people.