Via Weekly Standard:
Harry Reid was against the filibuster rule change before coming out for it. In 2005, when Republicans threatened to change the rules to weaken Senate Democrats, Reid was a vocal opponent.
“For people to suggest that you can break the rules to change the rules is un-American,” said Reid in 2005, in response to Republicans wanting to change the rules. “The only way you can change the rule in this body is through a rule that now says, to change a rule in the Senate rules to break a filibuster still requires 67 votes. You can’t do it with 60. You certainly cannot do it with 51. But now we are told the majority is going to do the so-called nuclear option. We will come in here, having the Vice President seated where my friend and colleague from Nevada is seated. The Parliamentarian would acknowledge it is illegal, it is wrong, you can’t do it, and they would overrule it. It would simply be: We are going to do it because we have more votes than you. You would be breaking the rules to change the rules. That is very un-American.”