Former President Clinton says that being Hillary ClintonHillary Rodham ClintonOPINION: When will Dems realize the 'resistance' is a losing cause? Perpetrator in Pizzagate case sentenced to 4 years in prison OPINION: Democrats are going to keep losing if they can't articulate a vision 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 ClintonTrump wants to keep new immigrants from getting welfare — which is already law Budowsky: Dems madder than hell Misreading lessons of an evolving electorate MORE has gone on the attack recently against Hillary Clinton's rival, Sen. Bernie SandersBernie SandersSenate expected to pass Russia sanctions bill for a second time The Hill's 12:30 Report Will we ever have civility in American political discourse 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."