The rules were limited to corporations, associations and unions. Individuals were not restricted in this type of speech. Citizens United was a nonprofit corporation.
Yes, which was the heart of the CU decision: if individual are unlimited, and corporations, associations, and unions are collections of individuals, then how can those be limited?
Put another way, the CU decision argued that individuals do not give up their right to free expressions just because they decided to pool their money in a particular way.
Put another way, the CU decision argued that individuals do not give up their right to free expressions just because they decided to pool their money in a particular way.