I think the senator did it half right. He does have a duty to represent his constituents so submitting bills by request seems reasonable to me. He should have (maybe he did, maybe he didn't) taken an extra step in telling the constituent that he does not support the bill but will propose it to represent him/her. But do they really want to propose it as it will likely never pass and the proposal seems to be extreme and many people will be upset by it. So are they sure they want this out. And if the constituent says yes, then I think the senator did his job. And if they say no, he still did his job and it would never have been proposed. But to just propose it even marked by request without going through the argument first would be irresponsible. At least that's my take on it.