Start with me.
But I assume you want higher profile people. That's fine. John Ashcroft. Lifetime ACU rating: 98. President George W. Bush, noted mainstream conservative Republican (unless you are talking to a leftist, in which case he is a fascist). Rich Lowery, editor. Rick Santorum, Senator from Pennsylvania with a lifetime ACU rating of 87. Lindsey Graham, Senator from South Carolina. Lifetime ACU rating of 91. As a matter of fact, most conservatives in Congress backed it, even though some would like to see some updates to fix some problems (a position I do not object to at all). Those include names like Crapo and Sessions and Sununu. Charles Krauthammer, political commentator. Sacramento activist and head of the Patriot Defenders Network, Dave Jenest.
You see, when it comes to conservatives, there is divide on the issue. Some think it went too far, some think it didn't go far enough, some think it was needed, some think it wasn't, some think it was needed but could be improved. Temperment-wise, this makes sense. Conservatives by nature learn from history. History has shown we need to act to prevent the spread of terrorist networks within our country; that was a lesson of 9/11. But history has also shown that power will eventually be abused. It is only natural, therefore, that there would be a debate and lack of unanimity within conservative circles on the matter.
Libertarians and assorted leftists, however, are universally opposed to it.