(CNN) -- White House officials have pressured insurance industry executives to keep quiet amid mounting criticism over Obamacare's rollout, insurance industry sources told CNN. After insurance officials publicly criticized the implementation, White House staffers contacted insurers to express their displeasure, industry insiders said. Multiple sources declined to speak publicly about the push back because they fear retribution. Can people keep plans under Obamacare? Keeping Obamacare's promises Obamacare's messaging problem But Bob Laszewski, who heads a consulting firm for big insurance companies, did talk on the record. "The White House is exerting massive pressure on the industry, including the trade associations,...