Whether you believe in the Citizen's United decision or not, companies are still groups of people. People, alone or in groups, have the right to speak, and to petition the government.
For clarity, I think this particular attempt at lobbying is terrible and they ought to be blasted for it publicly. That doesn't mean it should be illegal for a group of people to talk to the government about their interests, just that if those interests are counter to the interests of the general public then we should judge that accordingly.
