Donald Trump has promised to make Americans great before, and as multiple lawsuits allege, it didn’t work out so well.

Republican presidential front-runner Donald Trump has vowed on the campaign trail to use his personal prowess and business savvy to help set the country on a better path. But he’s made similar promises in the past, which have not appeared to come true, multiple lawsuits claim. And now those accusations may come back to haunt him in his race for president.

It’s possible that Trump will have to take a break from the campaign trail before the final primaries in the Republican race to testify in a class-action lawsuit filed against the now-defunct Trump University in 2010. The suit is one of three Trump University is facing. Court documents, first reported by Yahoo Politics, indicate that both parties have listed the billionaire mogul on their witness list to testify in the case, which was filed in a federal court in San Diego. Though no date has been set for the trial, a pretrial conference is now scheduled for May 6.

The accusations also made an appearance in the Feb. 25 Republican debate, drawing significant attention from Trump’s rivals for the first time. Sen. Marco Rubio (R-Fl.) described the program as a “fake university” and Cruz also suggested that having a Republican presidential nominee with pending litigation could put the party’s chances of winning the race at risk. And it appears, as The Washington Post points out, that the public noticed. The chart below from Google Trends shows that interest in Trump University spiked after mentions on the debate stage. In response, Trump said the case was “nonsense” and that he would win the civil suit.

The claims caught up with Trump again on Super Tuesday, when a Manhattan appeals court ruled that a suit filed against Trump University by New York Attorney General Eric Schneiderman could proceed. Attorneys representing Trump University had argued that the case should be thrown out because the statute of limitations had expired. Schneiderman alleged in the suit that Trump University lured students into paying tens of thousands of dollars to access Trump’s network and investment secrets, promises that never came true.

“Today’s decision is a clear victory in our effort to hold Donald Trump and Trump University accountable for defrauding thousands of students,” Schneiderman said in a statement. “We look forward to demonstrating in a court of law that Donald Trump and his sham for-profit college defrauded more than 5,000 consumers out of millions of dollars.”

In the class-action court documents, former students accuse Trump University of luring them into spending tens of thousands of dollars to better their lives through courses on real-estate investment and access to mentors. But the promises never came to fruition, the suit alleges. Trump’s lawyer and a spokeswoman for his campaign didn’t immediately respond to requests for comment, but Trump has previously denied the allegations.

Trump University first launched in 2005 and it wasn’t a university in a traditional sense. Instead it functioned more as a series of business and real estate-focused seminars — some online — and mentorship programs. In 2010, the company changed its name to the Trump Entrepreneur Initiative after years of pressure for the New York State Education Department, which argued that it was misleading. The program later shut down in 2010.

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The court documents, filed in federal court in California, claim that Trump University used radio and newspaper ads to draw students to free seminars with radio and newspaper ads promising access to instructors and information that made Trump a success. Once they got there, they were urged by speakers flanked by banners of Trump to sign up for a “one year apprenticeship” program, offering “a comprehensive real estate education” as well as access to mentors for a year, at the cost of $1,495, the documents claim.

The one-year program turned out to be a three-day seminar aimed at convincing students to pay $34,995 for a “full education,” the lawsuit alleges. During the program, students were told to raise their credit card limits by four times so they could purchase property. However, the students were then asked to use the increased credit to buy the “Gold Program” seminar, the documents claim. Students were told that participating in this program would give them access to mentors and deals that would teach them how to earn up to tens of thousands of dollars a month doing real-estate investing, the lawsuit claims. Instead, few deals materialized and mentors disappeared after two days looking at properties and a half day trip to Home Depot, according to court documents.

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Tarla Makaeff, the lead plaintiff in the case, spent nearly $60,000 to pay for Trump University products over the course of one year, the lawsuit claims. What she got in return were two offers for real estate deals that were “flawed” and “appeared unprofitable,” the lawsuit says.