Michael J. O'Connor refused to testify in a Finra disciplinary hearing about his termination.
Republican Hester Peirce and Democrat Robert Jackson seek to fill two vacancies on the commission.
Rep. Brad Sherman said he'd introduce legislation if he had to in order to get Finra to comply.
Robert Cook points to the regulator's in-house operational review, Finra 360, and says it will likely yield 'transformational change.'
Financial Services subcommittee will explore self-regulator's agenda, structure and in-house operational review.
She is also expected to set the agenda for ETFs, an area in which she has expertise from her previous time at the SEC.
If the best-interest contract remains in some form, action could switch to state courts; Finra still allows class actions.
Ms. Blass returns to the agency, where she previously worked for more than a decade, to run a division with influence over fiduciary duty.
Labor Department says it also needs more time to look at any 'undue burden' the rule may cause.
