The Obama campaign has reacted to a recent American Issues Project advertisement.

The project is “a knowing and willful attempt to violate the strictures of federal election law,” Obama general counsel Bob Bauer wrote to Deputy Assistant Attorney General John Keeney last week in a letter provided to Politico. Bauer argued that by advocating Obama’s defeat, the ad should be subject to the contribution limits of federal campaign law, not the anything-goes regime of issue advocacy.