Deloitte, Ernst & Young, KPMG and PricewaterhouseCoopers last year spent a combined $9.4 million on in-house and outside lobbyists, according to a Reuters analysis of congressional disclosure reports.

That is more than in any other year since 2002, the year of the downfall of former Enron Corp auditor Arthur Andersen, when the industry‘s dominant players fell to four from five.