division. >> zuckerberg shared a letter he wrote to facebook employees where he denied the allegations, saying they paint a false picture of the company. he called haugen's claim that facebook puts profit ahead of user safety, quote, deeply illogical and at odds with facebook goals. now, just moments ago on "new day," the senator in charge of that hearing essentially told the facebook boss to put up or shut up. >> he ought to spend more time looking at the platform as many of his own staff well know. and i'm hoping there are other whistle-blowers out there and more documents. we can't count on mark zu zuckerberg it tolto tell us the. we will be asking him to come testify before our subcommittee. if he has disagreements with frances haugen, or the whistle-blower, if he wants to explain the documents, thousands of them, his own research, his own reports, that show how they