I don't believe that the government is capable of passing legislation that will protect cultural diversity. Now countries are becoming so diverse that everyone you talk to believes something different. If a law was passed that protected a certain plant from being removed from the ground in order to please one culture, this may go against another culture that believes that they are needed inside homes. This would also cause problems for people who identify with multiple cultures. If they agree with one part of legislation, but not another this could cause problems. I also don't think that funding would be able to help cultures. I don't think there is enough money to be divided out to the many different cultures you are able to find on this Earth. When money is involved there are many arguments sometimes, and this would worsen the tension between certain cultures.
Government involvement could help cultural diversity. Legislation may protect sacred areas for some, and funding might be able to strengthen and rebuild cultures that are no longer heavily followed. I still do not think that this is enough of a reason to get the government involved. People's cultures are very different from one another, even if they fall under the same categories. By structuring culture with legislation and funding some of the freedoms are taken away. People's experiences and thoughts shape their personal culture. By forming a straight forward guideline to culture through legislation people will not be able to form their own thoughts and opinions. This changes the personal culture.