I get why he's doing it. He's a representative of the people who voted him into office. he sees a situation that might be adverse to the people as a whole.
He must either feel a football team is not important enough to circumvent the people's voice, or, the finances don't make sense to him, or, he's planning on running for office again and sees this as a grand stand opportunity to champion people's rights in a somewhat high-profile situation.
The senator dude must not feel Rams fans make up the majority of the voters there, and he certainly must not be one himself.