The controversial community organizing group ACORN is now suing the federal government.

Congress voted to cut all federal funding from the group after a video scandal uncovered them committing tax fraud.

That cost the organization millions in government funds.

ACORN is suing to try to get the money back, claiming Congress violated the Constitution.

"It's not the job of Congress to be the judge, jury, and executioner," attorney Jules Lobel told Reuters.

"We have due process in this country, and our Constitution forbids lawmakers from singling out a person or group for punishment without a fair investigation and trial," Lobel said.

ACORN officials say they underestimated the impact of the congressional action.