Final answer:
Campaign contributions are allowed before the start of the session, but not after.
Step-by-step explanation:
Campaign contributions are allowed before the start of the session, but not after. The Bipartisan Campaign Reform Act of 2002, also known as the McCain-Feingold Act, restricts the amount of money given to political parties and prohibits coordination between candidates and PAC campaigns. It also limits advertisements run by unions and corporations before a primary or general election.