8. Is there a ban on anonymous donations to candidates?

Paragraph 432(c) (2)The treasurer of a political committee shall keep an account of the name and address of any person who makes any contribution in excess of $50, together with the date and amount of such contribution by any person.

United States Code, Title 2, The Congress. 

No anonymous contributions in excess of $50 may be accepted by any candidate or candidate’s political committee.