The six senators who introduced legislation Thursday to slow down implementation of the "Volcker rule," designed to prohibit banks from profiting from trading on their own accounts, are the recipients of ample amounts of campaign cash from the financial industry.

Three Democrats and three Republicans are cosponsoring the effort to push back the effective date of a rule that has provoked bitter complaints from the banking industry. The Dodd-Frank law mandated that it go into effect July 21, the second anniversary of the financial regulatory overhaul. More than 17,000 comments have flooded into federal financial agencies. The proposed legislation ...