Reps. Lofgren and Visclosky are returning contributions listed as coming from individuals employed by PMA Group, according to this Post report. 

PMA, whose offices in Arlington were raided in November by FBI and Defense Criminal Investigation Service agents, is under investigation for improper campaign contributions to key lawmakers in charge of appropriations, according to two sources familiar with the probe. The nation’s tenth-biggest-earning lobbying firm specialized in winning lucrative earmarks for defense contractors and was led by former aides to key members of congressional appropriations committees.