Former Vice President Dick Cheney on Sunday said he believes repeal of “Don't Ask, Don't Tell” was “the right thing to do.”

The 18-year-old ban on gay and bisexual troops serving openly ended on September 20.

In an appearance on CNN's State of the Union, Cheney told host Candy Crowley that he supports the move.

“I think the decision that's been made with respect to allowing gays to serve openly in the military is a good one,” Cheney said. “It's the right thing to do.”

(Related: Dick and Lynne Cheney support gay marriage on The View.)

But Cheney rejected the notion that Republican candidates should have responded to the audience's booing of a gay soldier who asked about the policy during a recent GOP presidential debate.

Cheney said he's “a little bit leery of the notion that somehow we ought to hammer the Republican candidates because they didn't respond to the booing in the audience. When you're in a political campaign and debates, people boo a lot of things. I'm not sure that it was all focused specifically on that particular issue.”

Liz Cheney, Dick Cheney's daughter, suggested President Barack Obama's support for gay rights was disingenuous.

“I think it was the right decision to repeal 'Don't Ask, Don't Tell.' I don't know where President Obama is on this issue and I suspect that are a lot of people who are watching his speech in that room last night wondering whether they could believe what he was saying, frankly. His position on these issues hasn't been that different from where many of the Republican candidates are. He hasn't come out and advocated gay marriage, for example,” she said, referring to Obama's speech on Saturday at a gay fundraiser in which he chided GOP presidential candidates for not coming to the defense of booed gay soldier Stephen Hill. (The video is embedded in the right panel of this page.)