US President Donald Trump and his namesake foundation have been sued by the New York State Attorney General Barbara Underwood, with the president attacking "the sleazy New York Democrats" in response and vowing not to settle.
Underwood says the non-profit organisation should be dissolved after supporting Trump's 2016 US presidential campaign and more than 10 years of illegal conduct.
She accused the foundation's directors of "extensive unlawful political coordination" with the Trump campaign, and "repeated and wilful self-dealing" to benefit the personal and business interests of the president.
Following the accusations, Trump attacked "the sleazy New York Democrats" on Twitter.
"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!" he wrote.
Trump's children were also named as defendants in the petition, which was filed in the New York State Supreme Court.
New York is seeking a 10-year ban on Trump serving as a director of a New York non-profit, and one-year bans for his children Donald Jr, Eric and Ivanka as well as NZ$4.1 million ($US2.8 million) of restitution plus penalties.