Former President Clinton says that being Hillary ClintonHillary Diane Rodham ClintonChris Murphy’s profile rises with gun tragedies DNC, RNC step up cyber protections Gun proposal picks up GOP support MORE's husband puts limits on what he can say on the campaign trail.

"The hotter this election gets, the more I wish I were just a former president and just for a few months, not the spouse of the next one," he said when introducing his wife on the campaign trail in New Hampshire on Monday. "Because, you know, I have to be careful what I say."

"Tonight my job is to introduce Hillary," he added. "Sometimes when I'm on a stage like this, I wish we weren't married. Then I could say what I really think."

Bill ClintonBill ClintonAll five living former presidents to attend hurricane relief concert The Hill's 12:30 Report The Hill's 12:30 Report MORE has gone on the attack recently against Hillary Clinton's rival, Sen. Bernie SandersBernard (Bernie) SandersChris Murphy’s profile rises with gun tragedies Clip shows Larry David and Bernie Sanders reacting after discovering they're related For now, Trump dossier creates more questions than answers MORE (I-Vt.), raising concerns among Democrats who think the ex-commander in chief is being too aggressive.

On Sunday, he accused Sanders supporters of sexist attacks against Hillary Clinton. He also criticized the Vermont Independent's positions on healthcare and campaign finance.

“Is it good for America?” Clinton asked of Sanders’s healthcare model at an address two days before the New Hampshire primary. “I don’t think so. Is it good for New Hampshire? I don’t think so."