District of Columbia Attorney General Karl Racine launched the lawsuit earlier this week, according to the Washington Post, with Facebook having come under pressure over the last 12 months for its handling of personal data.
Speaking to the BBC, a spokesperson for the social networking platform explained: "We're reviewing the complaint and look forward to continuing our discussions with attorneys general in DC and elsewhere."
Facebook has faced a number of investigations for its relationship with Cambridge Analytica over recent months.
And, earlier this year, former Liberal Democrat leader Sir Nick Clegg was warned he risks his reputation unless he turns Facebook into a "powerful voice for liberalism".
Paddy Ashdown - another former leader of the British political party - issued a warning to Clegg after he was made the head of its global affairs and communications team
He tweeted: "My good friend Nick Clegg's reputation as a powerful voice for liberalism and democracy will now depend on his ability to persuade Facebook to be a global campaigner for the same values (sic)"