Banning any stock trading by members of Congress is a wildly popular idea, in part thanks to individual lawmakers who made contradictory claims about their own bottom lines. Members of Congress who simply file their paperwork late, an offense far short of insider trading, are hit by the same trust-sapping headline: They “violated the STOCK Act.” Republicans blistered Malinowski that year for stock trades he’d made and disclosed late — which didn’t make him less sympathetic to Kean. “You immediately leap to the conclusion that if this guy’s too sick to be in Congress, why does he have the energy to be stock trading?” The party is now getting bombarded by GOP attack ads accusing its members of perpetuating insider trading.