Sen. Bernie SandersBernard (Bernie) SandersSanders ally pushes Dems on cutting superdelegates Sanders: ‘Trump's agenda is dead’ if Democrats win back majority Hannity snaps back at 'Crybaby' Todd: 'Only conservatives have to disclose relationships?' MORE (I-Vt.) says attacks against former President Bill ClintonWilliam (Bill) Jefferson ClintonWith Ryan out, let’s blow up the process for selecting the next Speaker When Barbara Bush praised Bill Clinton, and Clinton praised the man she loved Meet the Democratic sleeper candidate gunning for Senate in Nebraska MORE’s sexual history are not fair game for politicians looking to defeat his wife and Democratic primary front-runner Hillary ClintonHillary Diane Rodham ClintonFormer presidents, first ladies come together to honor Barbara Bush Romney: Parts of Comey book read 'too much like a novel’ Collins: Comey should have waited to release his memoir MORE.

“I think, you know, we have enormous problems facing this country, and I think we got more things to worry about than Bill Clinton’s sexual life,” Sanders said Sunday on ABC’s “This Week.”

Republican primary front-runner Donald Trump has recently made the sexual allegations against Clinton an issue in the White House race.

Sanders said Trump would be better off focusing on serious issues facing the nation, like climate change.

“I think – interestingly enough, maybe Donald Trump might want to focus attention on climate change, understand that climate change is not a hoax, as he believes that it is, that maybe Donald Trump should understand that we should raise the minimum wage in this country, which he opposes, and maybe we should not be giving huge tax breaks to fellow billionaires like Donald Trump,” he said. 

The former president has denied the allegations of assault and harassment, as well as accusations of infidelity.

Sanders previously came to Hillary Clinton’s defense at the first Democratic primary debate, when he said the American people were “sick and tired” of hearing about the FBI investigation into her private email server.