President Trump's foundation served as a personal piggy bank for his businesses, legal bills and presidential campaign, New York's attorney general said Thursday as she sued the charity, Mr. Trump and three of his children. The Donald J. Trump Foundation "was little more than a checkbook for payments from Mr. Trump or his businesses to nonprofits, regardless of their purpose or legality," Democratic attorney general Barbara Underwood said as she sued to dissolve the foundation and seek $2.8 million in restitution.

The lawsuit says the foundation illegally helped support the Republican's campaign by raising money at a nationally televised fundraiser in January 2016, then allowing campaign staffers to dictate how the money was spent in grants.

Foundation attorney Sheri Dillon and a Trump Organization spokeswoman didn't immediately respond to messages seeking comment. She still represents the foundation. Mr. Trump defended himself on Twitter, calling the suit "ridiculous."

The sleazy New York Democrats, and their now disgraced (and run out of town) A.G. Eric Schneiderman, are doing everything they can to sue me on a foundation that took in $18,800,000 and gave out to charity more money than it took in, $19,200,000. I won’t settle this case!... — Donald J. Trump (@realDonaldTrump) June 14, 2018

....Schneiderman, who ran the Clinton campaign in New York, never had the guts to bring this ridiculous case, which lingered in their office for almost 2 years. Now he resigned his office in disgrace, and his disciples brought it when we would not settle. — Donald J. Trump (@realDonaldTrump) June 14, 2018

Underwood's predecessor, Democrat Eric Schneiderman, began investigating the foundation in 2016 following Washington Post reports that foundation spending personally benefited the presidential candidate. Schneiderman ordered the foundation to stop fundraising in New York.

The Trump campaign, at the time, said the foundation intended to cooperate with the investigation. The campaign had previously called Schneiderman "a partisan hack" who backed Trump's 2016 Democratic rival, Hillary Clinton. Schneiderman resigned from office last month after The New Yorker reported that multiple women had accused him of sexual assault and harassment.

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An unnamed spokesperson for the foundation pointed out that the former New York Attorney General, Eric Schneiderman, "was recently forced to resign from office in disgrace" and "made it his statement mission" to advance his own political goals.

"This is politics at its very worst," the spokesperson for the foundation said in a statement. "The foundation has donated over $19 million to worthy charitable causes – more than it even received. The president himself – or through his companies - has contributed more than $8 million. The reason the foundation was able to donate more than it took in is because it had little to no expenses. This is unheard of for a charitable foundation. The foundation currently has $1.7 million remaining which the NYAG has been holding hostage for political gain. This is unconscionable – particularly because the foundation previously announced its intention to dissolve more than a year and a half ago."

Correction: This article was updated to reflect that the lawsuit was announced Thursday, not Wednesday.