His vocal opposition made him an enemy to victims' groups, who viewed his political protest as a cunning effort to protect church coffers. But to those who saw their church as under siege from profiteers, Chaput emerged a hero.
"They thought they were fighting for their lives," said Annemarie Jensen, a political strategist who lobbied for the bill on behalf of the Colorado Coalition Against Sexual Assault. "It was about as ugly a political fight as I've been involved with at the Capitol."
Chaput - who is set to take the helm of Philadelphia's archdiocese next month - says he was just doing his job.
"The Catholic Church wants to be treated like citizens with equal access to protection of the law," Chaput said at a news conference in Philadelphia last month. (The Denver Archdiocese did not make him available for an interview for this article.) "That's all we were asking for in Colorado."
Since the nationwide church scandal began about a decade ago, five states have passed bills temporarily reopening the civil statute of limitations on sex-abuse cases. Eight others, including Pennsylvania, have considered them.
This so-called window legislation allows victims to seek justice years after their abuse by temporarily extending the period in which they can file claims. Although none of the adopted bills specifically mention the Catholic Church, archdioceses became the primary targets of litigation in each of the states that have passed them.
In California, one of the first to pass such legislation, more than 850 claims flooded courthouses during the one-year window that legislators opened, costing the church millions in damages and settlements.