Facing a spirited progressive primary challenge, US Rep. Richard Neal, D-Mass. is pressuring a local television station to pull down an ad criticizing his reliance on corporate PAC money, according to a letter obtained by Too Much Information (TMI) from Neal’s attorney. Neal’s attempt to block Democratic primary voters from seeing the ads about his campaign financing comes at the very moment his reelection bid is being bankrolled by donors from industries with business before his congressional committee.

Justice Democrats’ super PAC, the group behind the ad, spent at least $150,000 to have the thirty-second television spot run through the entire Democratic National Convention. The ad alleges that Neal “took more money from corporations than any other member of Congress” and says he “hasn’t held a town hall in years.” The group says the station has not pulled down the ad.

The cease and desist letter from an attorney representing Neal’s campaign insists that there is a material distinction between donations from corporations and donations from corporations’ political action committees, and that by not making that distinction clear, the implication was that Neal had committed a crime.