House and Senate Dems sent separate letters this week to Labor Secretary Thomas Perez asking him to add 45 days to the 75-day comment period.
Regulator charges Atlanta firm with improperly recommending alternative investments.
Members of the five-person commission have clashed over whether the regulator unfairly cracks down on such professionals.
Gallagher, Aguilar at odds on how regulator treats CCOs.
Chairwoman Mary Jo White says may float proposal that would outline why agency sends cases to its judges.
Along with financial industry, group of legislators ask for extension of public comment period on new proposal.
20-year agency vet takes helm after serving as acting chief since February, when Norm Champ left.
He's afraid that DOL and SEC could end up with two different standards, and that would confuse the public.
Friday hearing with CEO Rick Ketchum finds Republicans on the attack and Democrats doing the defense.
Groups say they need an extra 45 days above the 75-day comment period to respond.
