The vast majority of the nearly 100 lawmakers who received campaign donations from the embattled lobbying firm PMA Group have opted to hang on to the cash -- at least for now, reports Megan Scully in National Journal's CongressDaily.

Four lawmakers announced this week they would return money after reports that federal investigators are looking into campaign contributions made by people identified as working for PMA but who might not actually have been employed with the firm. But those lawmakers, among them House Ethics Chairwoman Zoe Lofgren, D-Calif., and Rep. Peter Visclosky, D-Ind., appear to be the exceptions. Spokesmen for several others who received generous donations from the firm, which was raided by the FBI in November, said they have not decided on what to do with the contributions. Details of the government investigation are unknown, but it appears to be tied to fraudulent donations.