Casino mogul and conservative donor Sheldon Adelson is threatening to sue the Democratic Congressional Campaign Committee (DCCC) for libel. The DCCC Tuesday confirmed to The Hill it received a letter from Adelson’s attorney. “We just received and are reviewing Mr. Adelson’s attorney’s letter,” DCCC spokesman Jesse Ferguson said in an email. Ferguson did not respond to a follow-up inquiry. In late June, the DCCC sent out a release alleging that prostitution money tied to Adelson helped fund the campaigns of Reps. Sean Duffy (R-Wis.) and Jim Renacci (R-Ohio), as well as other GOP incumbents. The charge stems from a lawsuit filed by a former employee of Adelson’s, who claimed that he personally approved of prostitution at one of his properties. Adelson denies the charges, and Politifact rated the claim as “Pants on Fire.” “Immediately retract and apologize for defamatory statements falsely accusing Mr. Adelson of encouraging and profiting from prostitution, maliciously branding Mr. Adelson as a pimp who has given ‘Chinese prostitution money’ to your political opponents,” the letter from Adelson’s attorney, first obtained by the Las Vegas Sun, reads in part. “These false allegations constitute libel per se entitling Mr. Adelson to compensatory and punitive damages.