The American Civil Liberties Union is urging Rhode Island lawmakers to proceed with caution as they weigh expelling a state senator accused of extorting sex from a page in the Senate's page program. Steven Brown, the executive director of the ACLU's Rhode Island office, said in a letter to Democratic Senate President Dominick Ruggerio on Tuesday that a vote to oust Republican Senate Minority Whip Nicholas Kettle could set a "dangerous" precedent. Kettle has denied any wrongdoing.