Democratic presidential hopeful Bernie Sanders said Sunday that he wouldn't follow Donald Trump's lead of attacking Bill or Hillary Clinton over the former president's sexual indiscretions as a way to derail the current Democratic front-runners chances of winning the party's nomination. Appearing on CNN's State of the Union, the Vermont senator said there "are more important things" where candidates should place their focus. 

"No, I think we've got more important things to worry about in this country than Bill Clinton's sex life," the Democratic presidential candidate said, according to CNN.

"Donald Trump might want to concern himself with the fact that he is dead wrong when he says we should not raise the minimum wage. He's dead wrong when he says that wages in America are too high," he said, Politico reported. "He's dead wrong when he thinks we should give huge tax breaks to billionaires like himself. And he's dead wrong when he thinks that climate change is a hoax, when the entire, virtually an entire scientific community thinks it's the great environmental crisis that we face."

Sanders added: "Maybe Trump should worry about those issues rather than Bill Clinton's sex life."

Sanders also appeared on ABC's This Week on Sunday and called Trump a "pathological liar." 

"I do not get engaged in personal attacks but Trump is over the edge," he said, ABC News reported. "The guy just comes up with things off the top of his head that are lies and someone has to say that."

Trump indicated earlier this week on the Today show that he plans to use Clinton's history as a part of his attack strategy, saying, "You look at whether it's Monica Lewinsky or Paula Jones or many of them," according to NBC News. "That certainly will be fair game. Certainly if they play the woman's card with respect to me, that will be fair game."