For instance, under the US constitution, freedom of expression limits all levels of government.
There are some cases where affirmative rights granted to the federal government also limits the power of the states.
For example, the Supreme Court found in Gibbons v. Ogden (1824) that not only does Congress have the right to regulate interstate commerce, but only Congress does, and that States can't create their own rules for commerce between each other.
(The FCC can claim they don't have the right to enforce Title 2, but that's really for the Supreme Court to decide.)
I think it's worth noting that Title 2 classification is not Net Neutrality, and that the Title 2 classification was based off of an idea of 'forbearance', that the government has granted itself broad sweeping regulatory powers over telecoms but promises not to use a lot of them (rate setting, etc).
Title 2 classification had a lot of problems, and real Net Neutrality legislation is preferable.