(CNN)A Democratic super PAC on Wednesday filed a lawsuit against the Federal Election Commission in a bid to force the agency to take action against former President Donald Trump for, in their view, essentially running for president without formally declaring himself a candidate.

The lawsuit from American Bridge 21st Century follows a March complaintwith the commission, alleging that Trump is raising and spending big sums to promote a likely presidential campaign in 2024, while skirting federal campaign finance laws that require those who raise or spend more than $5,000 to register as a candidate. 

Presidential candidates also must comply with strict limits on the amount of money they can collect from each donor and are barred from coordinating their activities with super PACs.

American Bridge says it has filed the lawsuit because the FEC, which often deadlocks along partisan lines, has not yet taken action. It's not clear that the case would move through the court system quickly enough to influence matters before the 2024 campaign gets underway.

An FEC spokeswoman said Wednesday that the commission does not comment on litigation. And a Trump spokesman did not immediately respond to CNN inquiries.

Trump has signaled that he is plotting a third presidential bid, telling New York Magazine recently that he is still deciding when -- rather than if -- he should announce a 2024 campaign.