I worked for a health insurance a few years back. Business lunches were customary EXCEPT in my department because we health exclusively with municipal governments. Literal day one, I was told to never ever ever pay because of ethics rules. This is not hard.
The whole line indicating that some poor schlub in office might stumble into doing a bribery unwittingly is so fucking ludicrous that it could only have come from a court Clarence Thomas sits on.
The manual for how to deal with gifts to government officials is literally one word and it's "don't."