What did the courts determine was constitutional and unconstitutional in the case of Buckley v. Valeo? Be sure to identify the court's reasoning as well.

In the landmark case Buckley v. Valeo, the Supreme Court made determinations on several campaign finance regulations and their constitutionality. The court's reasoning was divided into several parts:

1. Contribution Limits:
- Constitutional: The court held that limits on contributions to political campaigns were permissible because they prevent actual or perceived corruption. Such limits were seen as serving a compelling state interest.
- Reasoning: The court stated that campaign contributions are symbolic expressions of support for a candidate, and by limiting them, the risk of corruption or the appearance of corruption could be reduced.

2. Expenditure Limits:
- Unconstitutional: The court ruled that limitations on campaign expenditures violated the First Amendment's protection of free speech.
- Reasoning: The court expressed concern that expenditure limits would restrict the ability of candidates and citizens to voice their opinions and engage in political debate effectively. They argued that spending money on campaigns is an integral part of the democratic process, allowing candidates to communicate their ideas to the public.

3. Disclosure Requirements:
- Constitutional: The court upheld the constitutionality of disclosure requirements, which compel candidates and political committees to report information about their campaign finances.
- Reasoning: The court reasoned that disclosure allows voters to make informed decisions and helps prevent corruption or the appearance of corruption in the political process. They emphasized that the additional burden imposed by disclosure requirements was minimal compared to the benefits obtained.

4. Public Financing:
- Constitutional: The court upheld the constitutionality of public financing of campaigns, which offered government funds to candidates who agreed to certain limitations.
- Reasoning: The court stated that public financing was a valid means to reduce the potential for corruption in elections. By providing candidates with alternative funding sources, they would be less reliant on private donations and less likely to feel obligated to favor particular interests.

Overall, the court determined that limitations on campaign expenditures were unconstitutional due to the protection of free speech. However, they upheld contribution limits, disclosure requirements, and public financing programs to prevent corruption and promote transparency in the electoral process.